En primer lugar, de nuevo gracias por tu ayuda y amabilidad. El LPfix no lo puedo ejecutar pues como dije estoy con un knoppix-live que no me permite escribir en las unidades, sólo permite leerlas. Pero por lo menos me permite conectarme y entrar en el foro, además de demostrar que el router funciona. En cuanto al cwshredder, este es el log:

**** Run Keys ****

RUN: [AVG7_CC] C:\ARCHIV~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
RUN: [AVG7_EMC] C:\ARCHIV~1\Grisoft\AVGFRE~1\avgemc.exe
RUN: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
RUN: [RemoteControl] "C:\Archivos de programa\CyberLink\PowerDVD\PDVDServ.exe"
RUN: [SiSUSBRG] C:\WINDOWS\SiSUSBrg.exe
RUN: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
RUN: [DataLayer] C:\ARCHIV~1\ARCHIV~1\PCSuite\DATALA~1\DATALA~1.EXE
RUN: [PCSuiteTrayApplication] H:\ARCHIV~1\Nokia\NOKIAP~1\TRAYAP~1.EXE
RUN: [TkBellExe] "C:\Archivos de programa\Archivos comunes\Real\Update_OB\realsched.exe" -osboot
RUN: [Omnipage] G:\Archivos de programa\Canon\omnipage\opware32.exe
RUN: [QuickTime Task] "C:\Archivos de programa\QuickTime\qttask.exe" -atboottime
RUN: [iTunesHelper] C:\Archivos de programa\iTunes\iTunesHelper.exe
RUN: [gcasServ] "H:\Archivos de programa\Microsoft AntiSpyware\gcasServ.exe"
RUN: [ffis] C:\WINDOWS\isrvs\ffisearch.exe
RUN: [AgenteADSL_15] C:\Archivos de programa\Telefonica\KitAIM\AimExDll.exe AimGestA.dll 1
RUN: [edymtgv] c:\windows\system32\tbwqzrm.exe
RUN: [shjjndr] c:\windows\system32\jitmtpw.exe
RUN: [MSMSGS] "C:\Archivos de programa\Messenger\msmsgs.exe" /background
RUN: [SpySweeper] "C:\Archivos de programa\Webroot\Spy Sweeper\SpySweeper.exe" /0
RUN: [SpybotSD TeaTimer] H:\Archivos de programa\Spybot - Search & Destroy\TeaTimer.exe


**** Browser Helper Objects ****

BHO: [] H:\ARCHIV~1\SPYBOT~1\SDHelper.dll


**** IE Toolbars ****

TOOLBAR: [&Google] c:\archivos de programa\google\googletoolbar1.dll
TOOLBAR: [PDF de Adobe] H:\Archivos de programa\Adobe\Acrobat\AcroIEFavClient.dll


**** IE Extensions ****

IEExt: [Referencia]
IEExt: [Messenger] C:\Archivos de programa\Messenger\msmsgs.exe
(... un listado enorme de webs que he quitado... y sigue:)
**** IE Settings ****

Default Page: http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
Default Search: http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
Local Page: c:\windows\system32\blank.htm
Search Bar: http://ie.search.msn.com/{sub_rfc1766}/srchasst/srchasst.htm
Search Page: http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch


**** IE Context Menu (Right click) ****

IEContext: [&Google Search] res://C:\Archivos de programa\Google\GoogleToolbar1.dll/cmsearch.html
IEContext: [Backward &Links] res://C:\Archivos de programa\Google\GoogleToolbar1.dll/cmbacklinks.html
IEContext: [Cac&hed Snapshot of Page] res://C:\Archivos de programa\Google\GoogleToolbar1.dll/cmcache.html
IEContext: [E&xportar a Microsoft Excel] res://C:\ARCHIV~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
IEContext: [Si&milar Pages] res://C:\Archivos de programa\Google\GoogleToolbar1.dll/cmsimilar.html
IEContext: [Translate into English] res://C:\Archivos de programa\Google\GoogleToolbar1.dll/cmtrans.html


**** Layered Service Providers ****

LSP: winlspak.dll over [MSAFD Tcpip [TCP/IP]]
LSP: winlspak.dll over [MSAFD Tcpip [UDP/IP]]
LSP: MSAFD Tcpip [TCP/IP]
LSP: MSAFD Tcpip [UDP/IP]
LSP: RSVP UDP Service Provider
LSP: RSVP TCP Service Provider
LSP: MSAFD NetBIOS [\Device\NetBT_Tcpip_{C782B042-EE64-41B1-8C84-D4C5B65C7659}] SEQPACKET 3
LSP: MSAFD NetBIOS [\Device\NetBT_Tcpip_{C782B042-EE64-41B1-8C84-D4C5B65C7659}] DATAGRAM 3
LSP: MSAFD NetBIOS [\Device\NetBT_Tcpip_{C9C720B4-4331-4A0E-9ACD-FFCA0F6BA98E}] SEQPACKET 0
LSP: MSAFD NetBIOS [\Device\NetBT_Tcpip_{C9C720B4-4331-4A0E-9ACD-FFCA0F6BA98E}] DATAGRAM 0
LSP: MSAFD NetBIOS [\Device\NetBT_Tcpip_{0566E7EA-2CC3-461B-BEE9-A3DCCC8740DD}] SEQPACKET 1
LSP: MSAFD NetBIOS [\Device\NetBT_Tcpip_{0566E7EA-2CC3-461B-BEE9-A3DCCC8740DD}] DATAGRAM 1
LSP: MSAFD NetBIOS [\Device\NetBT_Tcpip_{31F0B135-2F89-4F80-9F35-2B8CD5D47170}] SEQPACKET 2
LSP: MSAFD NetBIOS [\Device\NetBT_Tcpip_{31F0B135-2F89-4F80-9F35-2B8CD5D47170}] DATAGRAM 2


**** Blocked Control Panel Items ****

BLOCKED: [ncpa.cpl] No
BLOCKED: [odbccp32.cpl] No


**** Downloaded Program Files ****

{3E68E405-C6DE-49FF-83AE-41EE9F4C36CE} [http://office.microsoft.com/officeupdate/content/opuc.cab] C:\WINDOWS\opuc.dll
{9A9307A0-7DA4-4DAF-B042-5009F29E09E1} [http://www.pandasoftware.com/activescan/as5/asinst.cab]
{A8658086-E6AC-4957-BC8E-8D54A7E8A790} [http://www.microsoft.com/security/controls/GDI/0/GDIChk.CAB]
{D27CDB6E-AE6D-11CF-96B8-444553540000} [http://fpdownload.macromedia.com/get/shockwave/cabs/flash/swflash.cab]


**** Windows Services ****

[Alerter] %SystemRoot%\system32\svchost.exe -k LocalService
[ALG] %SystemRoot%\System32\alg.exe
[AppMgmt] %SystemRoot%\system32\svchost.exe -k netsvcs
[AudioSrv] %SystemRoot%\System32\svchost.exe -k netsvcs
[Avg7Alrt] C:\ARCHIV~1\Grisoft\AVGFRE~1\avgamsvr.exe
[Avg7UpdSvc] C:\ARCHIV~1\Grisoft\AVGFRE~1\avgupsvc.exe
[BITS] %SystemRoot%\system32\svchost.exe -k netsvcs
[Browser] %SystemRoot%\system32\svchost.exe -k netsvcs
[CiSvc] %SystemRoot%\system32\cisvc.exe
[ClipSrv] %SystemRoot%\system32\clipsrv.exe
[COMSysApp] C:\WINDOWS\system32\dllhost.exe /Processid:{02D4B3F1-FD88-11D1-960D-00805FC79235}
[Crypkey License] crypserv.exe
[CryptSvc] %SystemRoot%\system32\svchost.exe -k netsvcs
[DcomLaunch] %SystemRoot%\system32\svchost -k DcomLaunch
[Dhcp] %SystemRoot%\system32\svchost.exe -k netsvcs
[dmadmin] %SystemRoot%\System32\dmadmin.exe /com
[dmserver] %SystemRoot%\System32\svchost.exe -k netsvcs
[Dnscache] %SystemRoot%\system32\svchost.exe -k NetworkService
[ERSvc] %SystemRoot%\System32\svchost.exe -k netsvcs
[Eventlog] %SystemRoot%\system32\services.exe
[EventSystem] C:\WINDOWS\system32\svchost.exe -k netsvcs
[FastUserSwitchingCompatibility] %SystemRoot%\System32\svchost.exe -k netsvcs
[helpsvc] %SystemRoot%\System32\svchost.exe -k netsvcs
[HidServ] %SystemRoot%\System32\svchost.exe -k netsvcs
[HTTPFilter] %SystemRoot%\System32\svchost.exe -k HTTPFilter
[ImapiService] C:\WINDOWS\system32\imapi.exe
[iPodService] "C:\Archivos de programa\iPod\bin\iPodService.exe"
[lanmanserver] %SystemRoot%\system32\svchost.exe -k netsvcs
[lanmanworkstation] %SystemRoot%\system32\svchost.exe -k netsvcs
[LmHosts] %SystemRoot%\system32\svchost.exe -k LocalService
[Macromedia Licensing Service] "C:\Archivos de programa\Archivos comunes\Macromedia Shared\Service\Macromedia Licensing.exe"
[Messenger] %SystemRoot%\system32\svchost.exe -k netsvcs
[mnmsrvc] C:\WINDOWS\system32\mnmsrvc.exe
[MSDTC] C:\WINDOWS\system32\msdtc.exe
[MSIServer] C:\WINDOWS\system32\msiexec.exe /V
[NetDDE] %SystemRoot%\system32\netdde.exe
[NetDDEdsdm] %SystemRoot%\system32\netdde.exe
[Netlogon] %SystemRoot%\system32\lsass.exe
[Netman] %SystemRoot%\System32\svchost.exe -k netsvcs
[Nla] %SystemRoot%\system32\svchost.exe -k netsvcs
[NtLmSsp] %SystemRoot%\system32\lsass.exe
[NtmsSvc] %SystemRoot%\system32\svchost.exe -k netsvcs
[ose] "C:\Archivos de programa\Archivos comunes\Microsoft Shared\Source Engine\OSE.EXE"
[PlugPlay] %SystemRoot%\system32\services.exe
[PolicyAgent] %SystemRoot%\system32\lsass.exe
[ProtectedStorage] %SystemRoot%\system32\lsass.exe
[RasAuto] %SystemRoot%\system32\svchost.exe -k netsvcs
[RasMan] %SystemRoot%\system32\svchost.exe -k netsvcs
[RDSessMgr] C:\WINDOWS\system32\sessmgr.exe
[RemoteAccess] %SystemRoot%\system32\svchost.exe -k netsvcs
[RemoteRegistry] %SystemRoot%\system32\svchost.exe -k LocalService
[RpcLocator] %SystemRoot%\system32\locator.exe
[RpcSs] %SystemRoot%\system32\svchost -k rpcss
[RSVP] %SystemRoot%\system32\rsvp.exe
[SamSs] %SystemRoot%\system32\lsass.exe
[SCardSvr] %SystemRoot%\System32\SCardSvr.exe
[Schedule] %SystemRoot%\System32\svchost.exe -k netsvcs
[seclogon] %SystemRoot%\System32\svchost.exe -k netsvcs
[SENS] %SystemRoot%\system32\svchost.exe -k netsvcs
[SharedAccess] %SystemRoot%\system32\svchost.exe -k netsvcs
[ShellHWDetection] %SystemRoot%\System32\svchost.exe -k netsvcs
[Spooler] %SystemRoot%\system32\spoolsv.exe
[srservice] %SystemRoot%\system32\svchost.exe -k netsvcs
[SSDPSRV] %SystemRoot%\system32\svchost.exe -k LocalService
[stisvc] %SystemRoot%\system32\svchost.exe -k imgsvc
[SvcProc] C:\WINDOWS\svcproc.exe
[SwPrv] C:\WINDOWS\system32\dllhost.exe /Processid:{59ACC59D-F250-4804-987F-CED19C356E7E}
[SysmonLog] %SystemRoot%\system32\smlogsvc.exe
[TapiSrv] %SystemRoot%\System32\svchost.exe -k netsvcs
[TermService] %SystemRoot%\System32\svchost -k DComLaunch
[Themes] %SystemRoot%\System32\svchost.exe -k netsvcs
[TlntSvr] C:\WINDOWS\system32\tlntsvr.exe
[TrkWks] %SystemRoot%\system32\svchost.exe -k netsvcs
[UMWdf] C:\WINDOWS\system32\wdfmgr.exe
[upnphost] %SystemRoot%\system32\svchost.exe -k LocalService
[UPS] %SystemRoot%\System32\ups.exe
[VSS] %SystemRoot%\System32\vssvc.exe
[W32Time] %SystemRoot%\System32\svchost.exe -k netsvcs
[WebClient] %SystemRoot%\system32\svchost.exe -k LocalService
[winmgmt] %systemroot%\system32\svchost.exe -k netsvcs
[WmdmPmSN] %SystemRoot%\System32\svchost.exe -k netsvcs
[Wmi] %SystemRoot%\System32\svchost.exe -k netsvcs
[WmiApSrv] C:\WINDOWS\system32\wbem\wmiapsrv.exe
[wscsvc] %SystemRoot%\System32\svchost.exe -k netsvcs
[wuauserv] %systemroot%\system32\svchost.exe -k netsvcs
[WZCSVC] %SystemRoot%\System32\svchost.exe -k netsvcs
[xmlprov] %SystemRoot%\System32\svchost.exe -k netsvcs


**** Custom IE Search Items ****

SEARCH: [SearchAssistant] http://ie.search.msn.com/{sub_rfc1766}/srchasst/srchasst.htm
SEARCH: [CustomizeSearch] http://ie.search.msn.com/{sub_rfc1766}/srchasst/srchcust.htm
SEARCH: [SearchAssistant] http://ie.search.msn.com/{sub_rfc1766}/srchasst/srchasst.htm
SEARCH: [CustomizeSearch] http://ie.search.msn.com/{sub_rfc1766}/srchasst/srchcust.htm


**** Complete IE Options ****

IEOPT: [NoUpdateCheck]
IEOPT: [NoJITSetup]
IEOPT: [Disable Script Debugger] yes
IEOPT: [Show_ChannelBand] No
IEOPT: [Anchor Underline] yes
IEOPT: [Cache_Update_Frequency] Once_Per_Session
IEOPT: [Display Inline Images] yes
IEOPT: [Do404Search]
IEOPT: [Save_Session_History_On_Exit] no
IEOPT: [Show_FullURL] no
IEOPT: [Show_StatusBar] yes
IEOPT: [Show_ToolBar] yes
IEOPT: [Show_URLinStatusBar] yes
IEOPT: [Show_URLToolBar] yes
IEOPT: [Start Page] http://es.yahoo.com/
IEOPT: [Use_DlgBox_Colors] yes
IEOPT: [Search Page] http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
IEOPT: [FullScreen] no
IEOPT: [Window_Placement] ,
IEOPT: [StatusBarOther]
IEOPT: [Use FormSuggest] yes
IEOPT: [NotifyDownloadComplete] yes
IEOPT: [AddToFavoritesExpanded]
IEOPT: [Use Search Asst] no
IEOPT: [Search Bar] http://ie.search.msn.com/{sub_rfc1766}/srchasst/srchasst.htm
IEOPT: [Enable Browser Extensions] yes
IEOPT: [Local Page] c:\windows\system32\blank.htm
IEOPT: [Default_Page_URL] http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
IEOPT: [Default_Search_URL] http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
IEOPT: [Search Page] http://www.microsoft.com/isapi/redir.dll?prd=ie&ar=iesearch
IEOPT: [Enable_Disk_Cache] yes
IEOPT: [Cache_Percent_of_Disk]
IEOPT: [Delete_Temp_Files_On_Exit] yes
IEOPT: [Local Page] c:\windows\system32\blank.htm
IEOPT: [Anchor_Visitation_Horizon]
IEOPT: [Use_Async_DNS] yes
IEOPT: [Placeholder_Width]
IEOPT: [Placeholder_Height]
IEOPT: [Start Page] http://www.microsoft.com/isapi/redir.dll?prd=ie&pver=6&ar=msnhome
IEOPT: [CompanyName] Microsoft Corporation
IEOPT: [Custom_Key] MICROSO
IEOPT: [Wizard_Version] 6.0.2600.0000
IEOPT: [FullScreen] no
IEOPT: [Search Bar] http://ie.search.msn.com/{sub_rfc1766}/srchasst/srchasst.htm
IEOPT: []