Mi puoi per piacere controllare il log.Grazie in anticipo:
Logfile of HijackThis v1.99.0
Scan saved at 9.05.50, on 08/03/2005
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

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\spoolsv.exe
C:\Programmi\AVPersonal\AVGUARD.EXE
C:\Programmi\AVPersonal\AVWUPSRV.EXE
C:\Programmi\File comuni\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\PROGRA~1\Agnitum\OUTPOS~1.0\outpost.exe
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\rsvp.exe
C:\WINDOWS\System32\carpserv.exe
C:\Programmi\Roxio\Easy CD Creator 5\DirectCD\DirectCD.exe
C:\Programmi\Hewlett-Packard\HP Software Update\HPWuSchd.exe
C:\Programmi\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
C:\WINDOWS\System32\rundll32.exe
C:\Programmi\Winamp\winampa.exe
C:\Programmi\AVPersonal\AVGNT.EXE
C:\WINDOWS\System32\ctfmon.exe
C:\WINDOWS\explorer.exe
C:\Programmi\AVPersonal\AVWIN.EXE
C:\Documents and Settings\utente\Impostazioni locali\Temp\Directory temporanea 1 per hijackthis.zip\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.virgilio.it/
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page_bak = http://www.rossoalice.it/
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - Default URLSearchHook is missing
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [Cmaudio] RunDll32 cmicnfg.cpl,CMICtrlWnd
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE NvQTwk,NvCplDaemon initialize
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [CARPService] carpserv.exe
O4 - HKLM\..\Run: [AdaptecDirectCD] "C:\Programmi\Roxio\Easy CD Creator 5\DirectCD\DirectCD.exe"
O4 - HKLM\..\Run: [HP Software Update] C:\Programmi\Hewlett-Packard\HP Software Update\HPWuSchd.exe
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb08.exe
O4 - HKLM\..\Run: [DeviceDiscovery] C:\Programmi\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
O4 - HKLM\..\Run: [REGSHAVE] C:\Programmi\REGSHAVE\REGSHAVE.EXE /AUTORUN
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [Internet Explorer] rsvp.exe
O4 - HKLM\..\Run: [AdslTaskBar] rundll32.exe stmctrl.dll,TaskBar
O4 - HKLM\..\Run: [*windows update] wuaurlt.exe
O4 - HKLM\..\Run: [WinampAgent] C:\Programmi\Winamp\winampa.exe
O4 - HKLM\..\Run: [AVGCtrl] C:\Programmi\AVPersonal\AVGNT.EXE /min
O4 - HKLM\..\Run: [Outpost Firewall] C:\PROGRA~1\Agnitum\OUTPOS~1.0\outpost.exe /waitservice
O4 - HKLM\..\RunServices: [Internet Explorer] rsvp.exe
O4 - HKLM\..\RunServices: [*windows update] wuaurlt.exe
O4 - HKLM\..\RunOnce: [Internet Explorer] rsvp.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [Internet Explorer] rsvp.exe
O4 - HKCU\..\Run: [*windows update] wuaurlt.exe
O4 - HKCU\..\RunOnce: [Internet Explorer] rsvp.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Programmi\File comuni\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Exif Launcher.lnk = ?
O4 - Global Startup: Microsoft Office.lnk = C:\Programmi\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://v5.windowsupdate.microsoft.com/v5consumer/V5Controls/en/x86/client/wuweb_site.cab?1097405378249
O23 - Service: Adobe LM Service - Unknown - C:\Programmi\File comuni\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: AntiVir Service - H+BEDV Datentechnik GmbH - C:\Programmi\AVPersonal\AVGUARD.EXE
O23 - Service: AntiVir Update - H+BEDV Datentechnik GmbH, Germany - C:\Programmi\AVPersonal\AVWUPSRV.EXE
O23 - Service: NVIDIA Driver Helper Service - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: Outpost Firewall Service - Agnitum - C:\PROGRA~1\Agnitum\OUTPOS~1.0\outpost.exe
O23 - Service: SmartLinkService - Unknown - slserv.exe (file missing)

Ciao ,
esegui queste operazioni

1) Disattiva il ripristino di configurazione, leggi qui come fare
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=257&SH=N

2) riavvia in modalità provvisoria, leggi qui come fare
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=344&SH=N

apri HIJAC THIS ed elimina come indicato in questo articolo
http://www.aiutamici.com/software/descrizione.asp?CodSw=1175
le righe che seguono, (nel caso le righe da eliminare non compaiono in modalità provvisoria, eliminale dalla modalità normale e riavvia il computer).

==================================
R3 - Default URLSearchHook is missing
-
O4 - HKLM\..\Run: [*windows update] wuaurlt.exe
-
O4 - HKLM\..\RunServices: [*windows update] wuaurlt.exe
-
O4 - HKCU\..\Run: [*windows update] wuaurlt.exe
-
O23 - Service: SmartLinkService - Unknown - slserv.exe (file missing)
==================================

Con la funzione TROVA di Windows, cerca ed elimina questi file,

==================================
wuaurlt.exe
==================================

al termine utilizza i programmi AD-AWARE e SPYBOT indicati in questo articolo
http://www.aiutamici.com/software/view.asp?tipo=home&CodSw=388&SH=N

sempre in modalità provvisoria fai una scansione Antivirus

quindi riavvia il computer e controlla se il problema e risolto, se e tutto OK riattiva il ripristino configurazione disattivato all'inizio di questa procedura.

Devi aggiornare windows con le patch di protezione da Window Update.

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Collaboratore Aiutamici

Fai un controllo antivirus on line da questo indirizzo
http://security.symantec.com/default.asp?productid=symhome&langid=it&venid=sym

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Collaboratore Aiutamici