Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 03:35:38 a.m., on 28/12/2007
Platform: Windows Vista (WinNT 6.00.1904)
MSIE: Internet Explorer v7.00 (7.00.6000.16575)
Boot mode: Normal

Running processes:
C:\Windows\system32\Dwm.exe
C:\Windows\SYSTEM32\taskeng.exe
C:\Windows\Explorer.EXE
C:\Program Files\Video Add-on\icthis.exe
C:\Program Files\Windows Defender\MSASCui.exe
C:\Windows\System32\pctspk.exe
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\Windows\SOUNDMAN.EXE
C:\Windows\System32\VTTimer.exe
C:\Program Files\Common Files\InstallShield\UpdateService\issch.exe
C:\Program Files\Windows Live\Protección infantil\fssui.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\VirusRanger\VirusRanger.exe
C:\Windows\System32\rundll32.exe
C:\Program Files\PC Tools AntiVirus\PCTAV.exe
C:\Program Files\Windows Sidebar\sidebar.exe
C:\Program Files\VirusRanger\VirusRanger.exe
C:\Program Files\Common Files\Ahead\Lib\NMBgMonitor.exe
C:\Windows\ehome\ehtray.exee
C:\Windows\ehome\ehmsas.exe
C:\Program Files\Common Files\Ahead\Lib\NMIndexStoreSvr.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Microsoft Encarta\Biblioteca de Consulta Encarta 2005\EDICT.EXE
C:\Program Files\Yahoo!\Messenger\ymsgr_tray.exe
C:\Program Files\Internet Explorer\ieuser.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Windows\SYSTEM32\taskeng.exe
C:\Windows\system32\Macromed\Flash\FlashUtil9e.exe
C:\Program Files\Lavasoft\Ad-Aware 2007\Ad-Aware2007.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

O23 - Service: vrsvc - Unknown owner - C:\Program Files\VirusRanger\vrsvc.exe

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End of file - 1713 bytes

Buenasss

Eso es lo único que sale en tu log?? Chequea haberlo pegado bien
Fixeaste entradas por tu cuenta antes de plantear tu problema??

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Saludos