dopo aver ripulito tutto si aprono da sole delle finestre di internet explorer ed ora parte anche il download di un'immafgine che si apre automaticamente.ecco il log grazie ancora per il preziosissimo aiuto.

Logfile of HijackThis v1.99.1
Scan saved at 17.46.04, on 18/02/2007
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\ZoneLabs\vsmon.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\WINDOWS\System32\HPZipm12.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe
C:\Programmi\Labtec\Desktop\V5.1\kbdap32a.exe
C:\PROGRA~1\Grisoft\AVG7\avgcc.exe
C:\WINDOWS\vsnpstd2.exe
C:\Programmi\MSN Messenger\msnmsgr.exe
C:\Programmi\MSN Messenger\usnsvc.exe
C:\DOCUME~1\PAOLINO\DOCUME~1\SOFTWARE\MOZILLA\FIREFOX\FIREFOX.EXE
C:\Program Files\mIRC\mirc.exe
C:\Programmi\Windows Media Player\wmplayer.exe
C:\Documents and Settings\Paolino\Documenti\Sicurezza\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName =
O3 - Toolbar: &Google - {2318C2B1-4965-11d4-9B18-009027A5CD4F} - c:\programmi\google\googletoolbar3.dll
O4 - HKLM\..\Run: [Zone Labs Client] "C:\Programmi\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [OFFICEKB] C:\Programmi\Labtec\Desktop\V5.1\kbdap32a.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVG7\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [DllRunning] rundll32.exe "C:\WINDOWS\System32\hjvidnth.dll",setvm
O4 - HKLM\..\Run: [SNPSTD2] C:\WINDOWS\vsnpstd2.exe
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_11\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\jre1.5.0_11\bin\ssv.dll
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://by125fd.bay125.hotmail.msn.com/resources/MsnPUpld.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{40FE34AA-5A96-4F05-98CD-3621F8F0D64B}: NameServer = 85.37.17.42 85.38.28.87
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe (file missing)
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: NBService - Nero AG - C:\Programmi\Nero\Nero 7\Nero BackItUp\NBService.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe

devo anche aggiungere la presenza di Vundo all'interno del computer che non riesco ad eliminare con i vari strumenti di rimozione.
grazie