Gracias por seguir ayudandome, aqui dejo el log:

"Silent Runners.vbs", revision 52, http://www.silentrunners.org/
Operating System: Windows XP
Output limited to non-default values, except where indicated by "{++}"


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

HKCU\Software\Microsoft\Windows\CurrentVersion\Run \ {++}
"RocketDock" = ""C:\Archivos de programa\RocketDock\RocketDock.exe"" [null data]

HKLM\Software\Microsoft\Windows\CurrentVersion\Run \ {++}
"AVG7_CC" = "C:\ARCHIV~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP" ["GRISOFT, s.r.o."]
"NvCplDaemon" = "RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup" [MS]
"COMODO Firewall Pro" = ""C:\Archivos de programa\Comodo\Firewall\CPF.exe" /background" ["COMODO"]
"!AVG Anti-Spyware" = ""C:\Archivos de programa\Grisoft\AVG Anti-Spyware 7.5\avgas.exe" /minimized" ["GRISOFT s.r.o."]
"Adobe Reader Speed Launcher" = ""C:\Archivos de programa\Adobe\Reader 8.0\Reader\Reader_sl.exe"" ["Adobe Systems Incorporated"]

HKLM\Software\Microsoft\Windows\CurrentVersion\Exp lorer\Browser Helper Objects\
{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"]
{F156768E-81EF-470C-9057-481BA8380DBA}\(Default) = (no title provided)
-> {HKLM...CLSID} = "FlashGet GetFlash Class"
\InProcServer32\(Default) = "C:\Archivos de programa\FlashGet\getflash.dll" ["www.flashget.com"]

HKLM\Software\Microsoft\Windows\CurrentVersion\She ll Extensions\Approved\
"{42071714-76d4-11d1-8b24-00a0c9068ff3}" = "Extensión de paneo de pantalla del Panel de control"
-> {HKLM...CLSID} = "Extensión de paneo de pantalla del Panel de control"
\InProcServer32\(Default) = "deskpan.dll" [file not found]
"{88895560-9AA2-1069-930E-00AA0030EBC8}" = "Extensión de icono de HyperTerminal"
-> {HKLM...CLSID} = "HyperTerminal Icon Ext"
\InProcServer32\(Default) = "C:\WINDOWS\System32\hticons.dll" ["Hilgraeve, Inc."]
"{0006F045-0000-0000-C000-000000000046}" = "Microsoft Outlook Custom Icon Handler"
-> {HKLM...CLSID} = "Extensión de iconos de archivo de Outlook"
\InProcServer32\(Default) = "C:\Archivos de programa\Microsoft Office\Office10\OLKFSTUB.DLL" [MS]
"{42042206-2D85-11D3-8CFF-005004838597}" = "Microsoft Office HTML Icon Handler"
-> {HKLM...CLSID} = (no title provided)
\InProcServer32\(Default) = "C:\Archivos de programa\Microsoft Office\Office10\msohev.dll" [MS]
"{9F97547E-4609-42C5-AE0C-81C61FFAEBC3}" = "AVG7 Shell Extension"
-> {HKLM...CLSID} = "AVG7 Shell Extension Class"
\InProcServer32\(Default) = "C:\Archivos de programa\Grisoft\AVG Free\avgse.dll" ["GRISOFT, s.r.o."]
"{9F97547E-460A-42C5-AE0C-81C61FFAEBC3}" = "AVG7 Find Extension"
-> {HKLM...CLSID} = "AVG7 Find Extension Class"
\InProcServer32\(Default) = "C:\Archivos de programa\Grisoft\AVG Free\avgse.dll" ["GRISOFT, s.r.o."]
"{B41DB860-8EE4-11D2-9906-E49FADC173CA}" = "WinRAR shell extension"
-> {HKLM...CLSID} = "WinRAR"
\InProcServer32\(Default) = "C:\Archivos de programa\WinRAR\rarext.dll" [null data]
"{FC9FB64A-1EB2-4CCF-AF5E-1A497A9B5C2D}" = "Messenger Sharing Folders"
-> {HKLM...CLSID} = "Mis carpetas para compartir"
\InProcServer32\(Default) = "C:\Archivos de programa\MSN Messenger\fsshext.8.1.0178.00.dll" [MS]
"{A70C977A-BF00-412C-90B7-034C51DA2439}" = "NvCpl DesktopContext Class"
-> {HKLM...CLSID} = "DesktopContext Class"
\InProcServer32\(Default) = "C:\WINDOWS\System32\nvcpl.dll" ["NVIDIA Corporation"]
"{FFB699E0-306A-11d3-8BD1-00104B6F7516}" = "Play on my TV helper"
-> {HKLM...CLSID} = "NVIDIA CPL Extension"
\InProcServer32\(Default) = "C:\WINDOWS\System32\nvcpl.dll" ["NVIDIA Corporation"]
"{1CDB2949-8F65-4355-8456-263E7C208A5D}" = "Desktop Explorer"
-> {HKLM...CLSID} = "Desktop Explorer"
\InProcServer32\(Default) = "C:\WINDOWS\System32\nvshell.dll" ["NVIDIA Corporation"]
"{1E9B04FB-F9E5-4718-997B-B8DA88302A47}" = "Desktop Explorer Menu"
-> {HKLM...CLSID} = (no title provided)
\InProcServer32\(Default) = "C:\WINDOWS\System32\nvshell.dll" ["NVIDIA Corporation"]
"{1E9B04FB-F9E5-4718-997B-B8DA88302A48}" = "nView Desktop Context Menu"
-> {HKLM...CLSID} = "nView Desktop Context Menu"
\InProcServer32\(Default) = "C:\WINDOWS\System32\nvshell.dll" ["NVIDIA Corporation"]
"{4858E7D9-8E12-45a3-B6A3-1CD128C9D403}" = "TuneUp Shredder Shell Extension"
-> {HKLM...CLSID} = "TuneUp Shredder Shell Extension"
\InProcServer32\(Default) = "C:\Archivos de programa\TuneUp Utilities 2007\SDShelEx-win32.dll" ["TuneUp Software GmbH"]
"{44440D00-FF19-4AFC-B765-9A0970567D97}" = "TuneUp Theme Extension"
-> {HKLM...CLSID} = "TuneUp Theme Extension"
\InProcServer32\(Default) = "C:\WINDOWS\System32\uxtuneup.dll" ["TuneUp Software GmbH"]

HKLM\Software\Microsoft\Windows\CurrentVersion\Exp lorer\ShellExecuteHooks\
<<!>> "{5AE067D3-9AFB-48E0-853A-EBB7F4A000DA}" = (no title provided)
-> {HKLM...CLSID} = "SABShellExecuteHook Class"
\InProcServer32\(Default) = "C:\Archivos de programa\SUPERAntiSpyware\SASSEH.DLL" ["SuperAdBlocker.com"]
<<!>> "{57B86673-276A-48B2-BAE7-C6DBB3020EB8}" = "AVG Anti-Spyware 7.5"
-> {HKLM...CLSID} = "CShellExecuteHookImpl Object"
\InProcServer32\(Default) = "C:\Archivos de programa\Grisoft\AVG Anti-Spyware 7.5\shellexecutehook.dll" ["GRISOFT s.r.o."]

HKLM\Software\Microsoft\Windows NT\CurrentVersion\Windows\
"AppInit_DLLs" = (value not set)

HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\
<<!>> !SASWinLogon\DLLName = "C:\Archivos de programa\SUPERAntiSpyware\SASWINLO.dll" ["SUPERAntiSpyware.com"]

HKLM\Software\Classes\Folder\shellex\ColumnHandler s\
{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\
AVG Anti-Spyware\(Default) = "{8934FCEF-F5B8-468f-951F-78A921CD3920}"
-> {HKLM...CLSID} = "CContextScan Object"
\InProcServer32\(Default) = "C:\Archivos de programa\Grisoft\AVG Anti-Spyware 7.5\context.dll" ["GRISOFT s.r.o."]
AVG7 Shell Extension\(Default) = "{9F97547E-4609-42C5-AE0C-81C61FFAEBC3}"
-> {HKLM...CLSID} = "AVG7 Shell Extension Class"
\InProcServer32\(Default) = "C:\Archivos de programa\Grisoft\AVG Free\avgse.dll" ["GRISOFT, s.r.o."]
TuneUp Shredder Shell Extension\(Default) = "{4858E7D9-8E12-45a3-B6A3-1CD128C9D403}"
-> {HKLM...CLSID} = "TuneUp Shredder Shell Extension"
\InProcServer32\(Default) = "C:\Archivos de programa\TuneUp Utilities 2007\SDShelEx-win32.dll" ["TuneUp Software GmbH"]
WinRAR\(Default) = "{B41DB860-8EE4-11D2-9906-E49FADC173CA}"
-> {HKLM...CLSID} = "WinRAR"
\InProcServer32\(Default) = "C:\Archivos de programa\WinRAR\rarext.dll" [null data]

HKLM\Software\Classes\Directory\shellex\ContextMen uHandlers\
AVG Anti-Spyware\(Default) = "{8934FCEF-F5B8-468f-951F-78A921CD3920}"
-> {HKLM...CLSID} = "CContextScan Object"
\InProcServer32\(Default) = "C:\Archivos de programa\Grisoft\AVG Anti-Spyware 7.5\context.dll" ["GRISOFT s.r.o."]
TuneUp Shredder Shell Extension\(Default) = "{4858E7D9-8E12-45a3-B6A3-1CD128C9D403}"
-> {HKLM...CLSID} = "TuneUp Shredder Shell Extension"
\InProcServer32\(Default) = "C:\Archivos de programa\TuneUp Utilities 2007\SDShelEx-win32.dll" ["TuneUp Software GmbH"]
WinRAR\(Default) = "{B41DB860-8EE4-11D2-9906-E49FADC173CA}"
-> {HKLM...CLSID} = "WinRAR"
\InProcServer32\(Default) = "C:\Archivos de programa\WinRAR\rarext.dll" [null data]

HKLM\Software\Classes\Folder\shellex\ContextMenuHa ndlers\
AVG7 Shell Extension\(Default) = "{9F97547E-4609-42C5-AE0C-81C61FFAEBC3}"
-> {HKLM...CLSID} = "AVG7 Shell Extension Class"
\InProcServer32\(Default) = "C:\Archivos de programa\Grisoft\AVG Free\avgse.dll" ["GRISOFT, s.r.o."]
WinRAR\(Default) = "{B41DB860-8EE4-11D2-9906-E49FADC173CA}"
-> {HKLM...CLSID} = "WinRAR"
\InProcServer32\(Default) = "C:\Archivos de programa\WinRAR\rarext.dll" [null data]


Group Policies {GPedit.msc branch and setting}:
-----------------------------------------------

Note: detected settings may not have any effect.

HKCU\Software\Microsoft\Windows\CurrentVersion\Pol icies\System\

"DisableRegistryTools" = (REG_DWORD) hex:0x00000000
{User Configuration|Administrative Templates|System|
Prevent access to registry editing tools}

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

"shutdownwithoutlogon" = (REG_DWORD) hex:0x00000001
{Computer Configuration|Windows Settings|Security Settings|Local Policies|Security Options|
Shutdown: Allow system to be shut down without having to log on}

"undockwithoutlogon" = (REG_DWORD) hex:0x00000001
{Computer Configuration|Windows Settings|Security Settings|Local Policies|Security Options|
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:\Documents and Settings\Administrador\Configuración 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\Administrador\Datos de programa\Mozilla\Firefox\Fondo de escritorio.bmp"


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

"1-Click Maintenance" -> launches: "C:\Archivos de programa\TuneUp Utilities 2007\SystemOptimizer.exe /schedulestart" ["TuneUp Software GmbH"]


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 - 17
%SystemRoot%\system32\rsvpsp.dll [MS], 04 - 05


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

Explorer Bars

HKLM\Software\Microsoft\Internet Explorer\Explorer Bars\
{9455301C-CF6B-11D3-A266-00C04F689C50}\(Default) = (no title provided)
-> {HKLM...CLSID} = "&Investigador de Encarta"
\InProcServer32\(Default) = "C:\Archivos de programa\Archivos comunes\Microsoft Shared\Reference 2001\EROProj.dll" [MS]

Extensions (Tools menu items, main toolbar menu buttons)

HKLM\Software\Microsoft\Internet Explorer\Extensions\
{08B0E5C0-4FCB-11CF-AAA5-00401C608501}\
"MenuText" = "Consola de Sun Java"
"CLSIDExtension" = "{CAFEEFAC-0016-0000-0001-ABCDEFFEDCBC}"
-> {HKLM...CLSID} = "Java Plug-in 1.6.0_01"
\InProcServer32\(Default) = "C:\Archivos de programa\Java\jre1.6.0_01\bin\npjpi160_01.dll" ["Sun Microsystems, Inc."]

{9455301C-CF6B-11D3-A266-00C04F689C50}\
"ButtonText" = "Investigador"

{D6E814A0-E0C5-11D4-8D29-0050BA6940E3}\
"ButtonText" = "FlashGet"
"MenuText" = "FlashGet"
"Exec" = "C:\Archivos de programa\FlashGet\FlashGet.exe" ["FlashGet.com"]


Miscellaneous IE Hijack Points
------------------------------

HKLM\Software\Microsoft\Internet Explorer\AboutURLs\
<<H>> "TuneUp" = "file://C|/Documents and Settings/All Users/Datos de programa/TuneUp Software/Common/base.css" [file not found]


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

AVG Anti-Spyware Guard, AVG Anti-Spyware Guard, "C:\Archivos de programa\Grisoft\AVG Anti-Spyware 7.5\guard.exe" ["GRISOFT s.r.o."]
AVG7 Update Service, Avg7UpdSvc, "C:\ARCHIV~1\Grisoft\AVGFRE~1\avgupsvc.exe" ["GRISOFT, s.r.o."]
Comodo Application Agent, CmdAgent, "C:\Archivos de programa\Comodo\Firewall\cmdagent.exe" ["COMODO"]
NVIDIA Display Driver Service, NVSvc, "C:\WINDOWS\System32\nvsvc32.exe" ["NVIDIA Corporation"]
TuneUp Ampliación del thema, UxTuneUp, "C:\WINDOWS\System32\svchost.exe -k netsvcs" {"C:\WINDOWS\System32\uxtuneup.dll" ["TuneUp Software GmbH"]}


---------- (launch time: 2007-08-21 12:14:13)
<<!>>: Suspicious data at a malware launch point.
<<H>>: Suspicious data at a browser hijack 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 202 seconds.
---------- (total run time: 333 seconds)