Hola, te envío el reporte del script:

"Silent Runners.vbs", revision 57, http://www.silentrunners.org/
Operating System: Windows XP SP2
Output limited to non-default values, except where indicated by "{++}"


Startup items buried in registry:
---------------------------------

HKCU\Software\Microsoft\Windows\CurrentVersion\Run \ {++}
"CTFMON.EXE" = "C:\WINDOWS\system32\ctfmon.exe" [MS]
"MSMSGS" = ""C:\Archivos de programa\Messenger\msmsgs.exe" /background" [MS]
"SpybotSD TeaTimer" = ""C:\Archivos de programa\Spybot - Search & Destroy\TeaTimer.exe"" ["Safer Networking Limited"]

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run \ {++}
"igfxtray" = "C:\WINDOWS\system32\igfxtray.exe" ["Intel Corporation"]
"igfxhkcmd" = "C:\WINDOWS\system32\hkcmd.exe" ["Intel Corporation"]
"igfxpers" = "C:\WINDOWS\system32\igfxpers.exe" ["Intel Corporation"]
"SunJavaUpdateSched" = ""C:\Archivos de programa\Java\jre1.6.0_05\bin\jusched.exe"" ["Sun Microsystems, Inc."]
"SigmatelSysTrayApp" = "stsystra.exe" ["SigmaTel, Inc."]
"DMXLauncher" = ""C:\Archivos de programa\Dell\Media Experience\DMXLauncher.exe"" [null data]
"DLA" = "C:\WINDOWS\System32\DLA\DLACTRLW.EXE" ["Sonic Solutions"]
"ISUSPM Startup" = ""C:\ARCHIV~1\ARCHIV~1\INSTAL~1\UPDATE~1\ISUSPM.ex e" -startup" ["InstallShield Software Corporation"]
"ISUSScheduler" = ""C:\Archivos de programa\Archivos comunes\InstallShield\UpdateService\issch.exe" -start" ["InstallShield Software Corporation"]
"DAEMON Tools" = ""C:\Archivos de programa\DAEMON Tools\daemon.exe" -lang 1033" ["DT Soft Ltd."]
"WinampAgent" = ""C:\Archivos de programa\Winamp\winampa.exe"" [null data]
"QuickTime Task" = ""C:\Archivos de programa\QuickTime\QTTask.exe" -atboottime" ["Apple Inc."]
"Adobe Reader Speed Launcher" = ""C:\Archivos de programa\Adobe\Reader 8.0\Reader\Reader_sl.exe"" ["Adobe Systems Incorporated"]
"SpywareTerminator" = ""C:\Archivos de programa\Spyware Terminator\SpywareTerminatorShield.exe"" ["Crawler.com"]
"avast!" = "C:\ARCHIV~1\ALWILS~1\Avast4\ashDisp.exe" ["ALWIL Software"]
"MCUpdateExe" = "c:\ARCHIV~1\mcafee.com\agent\mcupdate.exe" ["McAfee, Inc"]
"MCAgentExe" = "C:\ARCHIV~1\McAfee.com\Agent\McAgent.exe" ["McAfee, Inc"]
"SpySweeper" = "C:\Archivos de programa\Webroot\Spy Sweeper\SpySweeperUI.exe /startintray" ["Webroot Software, Inc."]

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Exp lorer\Browser Helper Objects\
{02478D38-C3F9-4EFB-9B51-7695ECA05670}\(Default) = (no title provided)
-> {HKLM...CLSID} = "Yahoo! Toolbar Helper"
\InProcServer32\(Default) = "C:\Archivos de programa\Yahoo!\Companion\Installs\cpn\yt.dll" ["Yahoo! Inc."]
{06849E9F-C8D7-4D59-B87D-784B7D6BE0B3}\(Default) = (no title provided)
-> {HKLM...CLSID} = "Aplicación auxiliar de vínculos de Adobe PDF Reader"
\InProcServer32\(Default) = "C:\Archivos de programa\Archivos comunes\Adobe\Acrobat\ActiveX\AcroIEHelper.dll" ["Adobe Systems Incorporated"]
{5CA3D70E-1895-11CF-8E15-001234567890}\(Default) = (no title provided)
-> {HKLM...CLSID} = "DriveLetterAccess"
\InProcServer32\(Default) = "C:\WINDOWS\System32\DLA\DLASHX_W.DLL" ["Sonic Solutions"]

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\She ll Extensions\Approved\
"{88895560-9AA2-1069-930E-00AA0030EBC8}" = "Extensión de icono de HyperTerminal"
-> {HKLM...CLSID} = "HyperTerminal Icon Ext"
\InProcServer32\(Default) = "C:\WINDOWS\system32\hticons.dll" ["Hilgraeve, Inc."]
"{5CA3D70E-1895-11CF-8E15-001234567890}" = "DriveLetterAccess"
-> {HKLM...CLSID} = "DriveLetterAccess"
\InProcServer32\(Default) = "C:\WINDOWS\System32\DLA\DLASHX_W.DLL" ["Sonic Solutions"]
"{C52AF81D-F7A0-4AAB-8E87-F80A60CCD396}" = "OpenOffice.org Column Handler"
-> {HKLM...CLSID} = (no title provided)
\InProcServer32\(Default) = ""C:\Archivos de programa\OpenOffice.org 2.0\program\shlxthdl.dll"" ["Sun Microsystems, Inc."]
"{087B3AE3-E237-4467-B8DB-5A38AB959AC9}" = "OpenOffice.org Infotip Handler"
-> {HKLM...CLSID} = (no title provided)
\InProcServer32\(Default) = ""C:\Archivos de programa\OpenOffice.org 2.0\program\shlxthdl.dll"" ["Sun Microsystems, Inc."]
"{63542C48-9552-494A-84F7-73AA6A7C99C1}" = "OpenOffice.org Property Sheet Handler"
-> {HKLM...CLSID} = (no title provided)
\InProcServer32\(Default) = ""C:\Archivos de programa\OpenOffice.org 2.0\program\shlxthdl.dll"" ["Sun Microsystems, Inc."]
"{3B092F0C-7696-40E3-A80F-68D74DA84210}" = "OpenOffice.org Thumbnail Viewer"
-> {HKLM...CLSID} = (no title provided)
\InProcServer32\(Default) = ""C:\Archivos de programa\OpenOffice.org 2.0\program\shlxthdl.dll"" ["Sun Microsystems, Inc."]
"{23170F69-40C1-278A-1000-000100020000}" = "7-Zip Shell Extension"
-> {HKLM...CLSID} = "7-Zip Shell Extension"
\InProcServer32\(Default) = "C:\Archivos de programa\7-Zip\7-zip.dll" ["Igor Pavlov"]
"{BD88A479-9623-4897-8546-BC62B9628F44}" = "SPTHandler"
-> {HKLM...CLSID} = "SPTHandler"
\InProcServer32\(Default) = "C:\Archivos de programa\Spyware Terminator\sptcontmenu.dll" ["Crawler.com"]
"{472083B0-C522-11CF-8763-00608CC02F24}" = "avast"
-> {HKLM...CLSID} = "avast"
\InProcServer32\(Default) = "C:\Archivos de programa\Alwil Software\Avast4\ashShell.dll" ["ALWIL Software"]
"{7C9D5882-CB4A-4090-96C8-430BFE8B795B}" = "Webroot Spy Sweeper Context Menu Integration"
-> {HKLM...CLSID} = "Webroot Spy Sweeper Context Menu Integration"
\InProcServer32\(Default) = "C:\ARCHIV~1\Webroot\SPYSWE~1\SSCtxMnu.dll" ["Webroot Software, Inc."]

HKLM\SYSTEM\CurrentControlSet\Control\SecurityProv iders\
<<!>> ("" [file not found]) "SecurityProviders" = "msapsspc.dll, schannel.dll, digest.dll, msnsspc.dll,"

HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\
<<!>> "BootExecute" = "autocheck autochk *"|"lsdelete" [null data]| [file not found]|"s" [file not found]|"SsiEfr.exe" ["Webroot Software Inc (www.webroot.com)"]

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\
<<!>> igfxcui\DLLName = "igfxdev.dll" ["Intel Corporation"]
<<!>> WRNotifier\DLLName = "WRLogonNTF.dll" ["Webroot Software, Inc."]

HKLM\SOFTWARE\Classes\Folder\shellex\ColumnHandler s\
{C52AF81D-F7A0-4AAB-8E87-F80A60CCD396}\(Default) = "OpenOffice.org Column Handler"
-> {HKLM...CLSID} = (no title provided)
\InProcServer32\(Default) = ""C:\Archivos de programa\OpenOffice.org 2.0\program\shlxthdl.dll"" ["Sun Microsystems, Inc."]
{F9DB5320-233E-11D1-9F84-707F02C10627}\(Default) = "PDF Column Info"
-> {HKLM...CLSID} = "PDF Shell Extension"
\InProcServer32\(Default) = "C:\Archivos de programa\Archivos comunes\Adobe\Acrobat\ActiveX\PDFShell.dll" ["Adobe Systems, Inc."]

HKLM\SOFTWARE\Classes\*\shellex\ContextMenuHandler s\
7-Zip\(Default) = "{23170F69-40C1-278A-1000-000100020000}"
-> {HKLM...CLSID} = "7-Zip Shell Extension"
\InProcServer32\(Default) = "C:\Archivos de programa\7-Zip\7-zip.dll" ["Igor Pavlov"]
avast\(Default) = "{472083B0-C522-11CF-8763-00608CC02F24}"
-> {HKLM...CLSID} = "avast"
\InProcServer32\(Default) = "C:\Archivos de programa\Alwil Software\Avast4\ashShell.dll" ["ALWIL Software"]

HKLM\SOFTWARE\Classes\Directory\shellex\ContextMen uHandlers\
7-Zip\(Default) = "{23170F69-40C1-278A-1000-000100020000}"
-> {HKLM...CLSID} = "7-Zip Shell Extension"
\InProcServer32\(Default) = "C:\Archivos de programa\7-Zip\7-zip.dll" ["Igor Pavlov"]

HKLM\SOFTWARE\Classes\Folder\shellex\ContextMenuHa ndlers\
avast\(Default) = "{472083B0-C522-11CF-8763-00608CC02F24}"
-> {HKLM...CLSID} = "avast"
\InProcServer32\(Default) = "C:\Archivos de programa\Alwil Software\Avast4\ashShell.dll" ["ALWIL Software"]
MBAMShlExt\(Default) = "{57CE581A-0CB6-4266-9CA0-19364C90A0B3}"
-> {HKLM...CLSID} = "MBAMShlExt Class"
\InProcServer32\(Default) = "C:\Archivos de programa\Malwarebytes' Anti-Malware\mbamext.dll" ["Malwarebytes"]
SpySweeper\(Default) = "{7C9D5882-CB4A-4090-96C8-430BFE8B795B}"
-> {HKLM...CLSID} = "Webroot Spy Sweeper Context Menu Integration"
\InProcServer32\(Default) = "C:\ARCHIV~1\Webroot\SPYSWE~1\SSCtxMnu.dll" ["Webroot Software, Inc."]

HKLM\SOFTWARE\Classes\AllFilesystemObjects\shellex \ContextMenuHandlers\
MBAMShlExt\(Default) = "{57CE581A-0CB6-4266-9CA0-19364C90A0B3}"
-> {HKLM...CLSID} = "MBAMShlExt Class"
\InProcServer32\(Default) = "C:\Archivos de programa\Malwarebytes' Anti-Malware\mbamext.dll" ["Malwarebytes"]
SPTContMenu\(Default) = "{BD88A479-9623-4897-8546-BC62B9628F44}"
-> {HKLM...CLSID} = "SPTHandler"
\InProcServer32\(Default) = "C:\Archivos de programa\Spyware Terminator\sptcontmenu.dll" ["Crawler.com"]
SpySweeper\(Default) = "{7C9D5882-CB4A-4090-96C8-430BFE8B795B}"
-> {HKLM...CLSID} = "Webroot Spy Sweeper Context Menu Integration"
\InProcServer32\(Default) = "C:\ARCHIV~1\Webroot\SPYSWE~1\SSCtxMnu.dll" ["Webroot Software, Inc."]


Default executables:
--------------------

HKLM\SOFTWARE\Classes\.scr\(Default) = "scrfile"
<<!>> HKLM\SOFTWARE\Classes\scrfile\shell\open\command\( Default) = ""%1" %*" [file not found]


Group Policies {policy setting}:
--------------------------------

Note: detected settings may not have any effect.

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Pol icies\Explorer\

"NoCDBurning" = (REG_DWORD) dword:0x00000000
{unrecognized setting}

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Pol icies\System\

"shutdownwithoutlogon" = (REG_DWORD) dword:0x00000001
{Shutdown: Allow system to be shut down without having to log on}

"undockwithoutlogon" = (REG_DWORD) dword:0x00000001
{Devices: Allow undock without having to log on}


Active Desktop and Wallpaper:
-----------------------------

Active Desktop may be disabled at this entry:
HKCU\Software\Microsoft\Windows\CurrentVersion\Exp lorer\ShellState

Displayed if Active Desktop enabled and wallpaper not set by Group Policy:
HKCU\Software\Microsoft\Internet Explorer\Desktop\General\
"Wallpaper" = "C:\WINDOWS\system32\config\systemprofile\Configur ación local\Datos de programa\Microsoft\Wallpaper1.bmp"

Displayed if Active Desktop disabled and wallpaper not set by Group Policy:
HKCU\Control Panel\Desktop\
"Wallpaper" = "C:\Documents and Settings\Marco Antonio\Configuración local\Datos de programa\Microsoft\Wallpaper1.bmp"


Windows Portable Device AutoPlay Handlers
-----------------------------------------

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Exp lorer\AutoplayHandlers\Handlers\

MPCPlayCDAudioOnArrival\
"Provider" = "Media Player Classi"
"InvokeProgID" = "MPC.CDAudio"
"InvokeVerb" = "play"
HKLM\SOFTWARE\Classes\MPC.CDAudio\shell\play\comma nd\(Default) = ""C:\Archivos de programa\K-Lite Codec Pack\Media Player Classic\mplayerc.exe" %L /cd" ["Gabest"]

MPCPlayDVDMovieOnArrival\
"Provider" = "Media Player Classic"
"InvokeProgID" = "MPC.DVDMovie"
"InvokeVerb" = "play"
HKLM\SOFTWARE\Classes\MPC.DVDMovie\shell\play\comm and\(Default) = ""C:\Archivos de programa\K-Lite Codec Pack\Media Player Classic\mplayerc.exe" %L /dvd" ["Gabest"]

SonicSCAudioCDTask\
"Provider" = "Roxio RecordNow Audio"
"InvokeProgID" = "Sonic.SonicCentral"
"InvokeVerb" = "AudioCDTask"
HKLM\SOFTWARE\Classes\Sonic.SonicCentral\shell\Aud ioCDTask\Command\(Default) = ""C:\Archivos de programa\Archivos comunes\Sonic Shared\Sonic Central\Main\Mediahub.exe" /Launch {EBD22732-1CC3-4CD7-9A45-B8D98DA0E784}" [null data]

SonicSCCopyCD\
"Provider" = "Roxio RecordNow Copy"
"InvokeProgID" = "Sonic.SonicCentral"
"InvokeVerb" = "ExactCopyJob"
HKLM\SOFTWARE\Classes\Sonic.SonicCentral\shell\Exa ctCopyJob\Command\(Default) = ""C:\Archivos de programa\Archivos comunes\Sonic Shared\Sonic Central\Main\Mediahub.exe" /Launch {49B235A3-1C3E-4802-9B5C-BAFBE69A3C85}" [null data]

SonicSCCopyDisc\
"Provider" = "Roxio RecordNow Copy"
"InvokeProgID" = "Sonic.SonicCentral"
"InvokeVerb" = "ExactCopyJob"
HKLM\SOFTWARE\Classes\Sonic.SonicCentral\shell\Exa ctCopyJob\Command\(Default) = ""C:\Archivos de programa\Archivos comunes\Sonic Shared\Sonic Central\Main\Mediahub.exe" /Launch {49B235A3-1C3E-4802-9B5C-BAFBE69A3C85}" [null data]

SonicSCDataProject\
"Provider" = "Roxio RecordNow Data"
"InvokeProgID" = "Sonic.SonicCentral"
"InvokeVerb" = "DataGuide"
HKLM\SOFTWARE\Classes\Sonic.SonicCentral\shell\Dat aGuide\Command\(Default) = ""C:\Archivos de programa\Archivos comunes\Sonic Shared\Sonic Central\Main\Mediahub.exe" /Launch Data" [null data]

SonicSCDataTask\
"Provider" = "Roxio RecordNow Data"
"InvokeProgID" = "Sonic.SonicCentral"
"InvokeVerb" = "DataTask"
HKLM\SOFTWARE\Classes\Sonic.SonicCentral\shell\Dat aTask\Command\(Default) = ""C:\Archivos de programa\Archivos comunes\Sonic Shared\Sonic Central\Main\Mediahub.exe" /Launch {0BAC5C34-DF45-4C0F-8D64-8E92DCCF007D}" [null data]

WinampMTPHandler\
"Provider" = "Winamp"
"ProgID" = "Shell.HWEventHandlerShellExecute"
"InitCmdLine" = "C:\Archivos de programa\Winamp\winamp.exe"
HKLM\SOFTWARE\Classes\Shell.HWEventHandlerShellExe cute\CLSID\(Default) = "{FFB8655F-81B9-4fce-B89C-9A6BA76D13E7}"
-> {HKLM...CLSID} = "ShellExecute HW Event Handler"
\LocalServer32\(Default) = "rundll32.exe shell32.dll,SHCreateLocalServerRunDll {FFB8655F-81B9-4fce-B89C-9A6BA76D13E7}" [MS]


Startup items in "Marco Antonio" & "All Users" startup folders:
---------------------------------------------------------------

C:\Documents and Settings\Marco Antonio\Menú Inicio\Programas\Inicio
"OpenOffice.org 2.0" -> shortcut to: "C:\Archivos de programa\OpenOffice.org 2.0\program\quickstart.exe" [null data]
"Stardock ObjectDock" -> shortcut to: "C:\Archivos de programa\Stardock\ObjectDock\ObjectDock.exe" ["Stardock"]

C:\Documents and Settings\All Users\Menú Inicio\Programas\Inicio
"Adobe Gamma Loader" -> shortcut to: "C:\Archivos de programa\Archivos comunes\Adobe\Calibration\Adobe Gamma Loader.exe" ["Adobe Systems, Inc."]
"Digital Line Detect" -> shortcut to: "C:\Archivos de programa\Digital Line Detect\DLG.exe" ["BVRP Software"]


Enabled Scheduled Tasks:
------------------------

"wrSpySweeperTrialSweep" -> launches: "C:\Archivos de programa\Webroot\Spy Sweeper\SpySweeperUI.exe /ScheduleSweep=wrSpySweeperTrialSweep" ["Webroot Software, Inc."]


Winsock2 Service Provider DLLs:
-------------------------------

Namespace Service Providers

HKLM\SYSTEM\CurrentControlSet\Services\Winsock2\Pa rameters\NameSpace_Catalog5\Catalog_Entries\ {++}
000000000001\LibraryPath = "%SystemRoot%\System32\mswsock.dll" [MS]
000000000002\LibraryPath = "%SystemRoot%\System32\winrnr.dll" [MS]
000000000003\LibraryPath = "%SystemRoot%\System32\mswsock.dll" [MS]

Transport Service Providers

HKLM\SYSTEM\CurrentControlSet\Services\Winsock2\Pa rameters\Protocol_Catalog9\Catalog_Entries\ {++}
0000000000##\PackedCatalogItem (contains) DLL [Company Name], (at) ## range:
%SystemRoot%\system32\mswsock.dll [MS], 01 - 03, 06 - 11
%SystemRoot%\system32\rsvpsp.dll [MS], 04 - 05


Toolbars, Explorer Bars, Extensions:
------------------------------------

Toolbars

HKCU\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser\
"{EF99BD32-C1FB-11D2-892F-0090271D4F88}"
-> {HKLM...CLSID} = "Yahoo! Toolbar"
\InProcServer32\(Default) = "C:\Archivos de programa\Yahoo!\Companion\Installs\cpn\yt.dll" ["Yahoo! Inc."]

HKLM\SOFTWARE\Microsoft\Internet Explorer\Toolbar\
"{EF99BD32-C1FB-11D2-892F-0090271D4F88}" = (no title provided)
-> {HKLM...CLSID} = "Yahoo! Toolbar"
\InProcServer32\(Default) = "C:\Archivos de programa\Yahoo!\Companion\Installs\cpn\yt.dll" ["Yahoo! Inc."]

Extensions (Tools menu items, main toolbar menu buttons)

HKLM\SOFTWARE\Microsoft\Internet Explorer\Extensions\
{FB5F1910-F110-11D2-BB9E-00C04F795683}\
"ButtonText" = "Messenger"
"MenuText" = "Windows Messenger"
"Exec" = "C:\Archivos de programa\Messenger\msmsgs.exe" [MS]


Running Services (Display Name, Service Name, Path {Service DLL}):
------------------------------------------------------------------

Ad-Aware 2007 Service, aawservice, ""C:\Archivos de programa\Lavasoft\Ad-Aware 2007\aawservice.exe"" ["Lavasoft"]
avast! Antivirus, avast! Antivirus, ""C:\Archivos de programa\Alwil Software\Avast4\ashServ.exe"" ["ALWIL Software"]
avast! iAVS4 Control Service, aswUpdSv, ""C:\Archivos de programa\Alwil Software\Avast4\aswUpdSv.exe"" ["ALWIL Software"]
avast! Mail Scanner, avast! Mail Scanner, ""C:\Archivos de programa\Alwil Software\Avast4\ashMaiSv.exe" /service" ["ALWIL Software"]
avast! Web Scanner, avast! Web Scanner, ""C:\Archivos de programa\Alwil Software\Avast4\ashWebSv.exe" /service" ["ALWIL Software"]
Gizmo VoIP Service, Gizmo Plugin, ""C:\Archivos de programa\GizmoPlugin\GizmoPlugin.exe"" ["SIPphone, Inc."]
McAfee Personal Firewall Service, MpfService, "C:\ARCHIV~1\McAfee.com\PERSON~1\MpfService.ex e" ["McAfee Corporation"]
McAfee Task Scheduler, McTskshd.exe, "c:\ARCHIV~1\mcafee.com\agent\mctskshd.exe" ["McAfee, Inc"]
McAfee WSC Integration, McDetect.exe, "c:\archivos de programa\mcafee.com\agent\mcdetect.exe" ["McAfee, Inc"]
Motor de Spy Sweeper de Webroot, WebrootSpySweeperService, ""C:\Archivos de programa\Webroot\Spy Sweeper\SpySweeper.exe"" ["Webroot Software, Inc."]
Spyware Terminator Realtime Shield Service, sp_rssrv, ""C:\Archivos de programa\Spyware Terminator\sp_rsser.exe"" ["Crawler.com"]


Keyboard Driver Filters:
------------------------

HKLM\SYSTEM\CurrentControlSet\Control\Class\{4D36E 96B-E325-11CE-BFC1-08002BE10318}\
"UpperFilters" = <<!>> "SSKBFD" ["Webroot Software Inc (www.webroot.com)"]


Print Monitors:
---------------

HKLM\SYSTEM\CurrentControlSet\Control\Print\Monito rs\
Microsoft Shared Fax Monitor\Driver = "FXSMON.DLL" [MS]
PDFCreator\Driver = "pdfcmnnt.dll" [null data]


---------- (launch time: 2008-05-11 00:27:32)
<<!>>: Suspicious data at a malware launch point.

+ This report excludes default entries except where indicated.
+ To see *everywhere* the script checks and *everything* it finds,
launch it from a command prompt or a shortcut with the -all parameter.
+ The search for DESKTOP.INI DLL launch points on all local fixed drives
took 29 seconds.
---------- (total run time: 66 seconds)

El WinIfixer al parecer ya no esta pero he detectado otro infestop, firefox no muestra la página a la que redirige y lo detecta Spy Sweeper. Si estoy cometiendo algún error en los procedimientos no dudes en decirrmelo, sin importar la rudeza del comentario.
Saludos.