qui di seguito ti riporto il logfile di hjkthis
Logfile of HijackThis v1.99.1
Scan saved at 11.08.10, on 09/07/2007
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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Programmi\File comuni\Symantec Shared\ccSvcHst.exe
C:\Programmi\File comuni\Symantec Shared\AppCore\AppSvc32.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Ahead\InCD\InCDsrv.exe
C:\Programmi\File comuni\Microsoft Shared\VS7Debug\mdm.exe
C:\WINDOWS\System32\svchost.exe
C:\Programmi\Symantec\LiveUpdate\ALUSchedulerSvc.e xe
C:\WINDOWS\ATK0100\Hcontrol.exe
C:\Programmi\ASUS\ASUS Live Update\ALU.exe
C:\Progra~1\ASUS\Power4 Gear\BatteryLife.exe
C:\Progra~1\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Programmi\Synaptics\SynTP\SynTPLpr.exe
C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
C:\Programmi\Ahead\InCD\InCD.exe
C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb0 9.exe
C:\WINDOWS\ATK0100\regservice.exe
C:\Programmi\File comuni\Symantec Shared\ccApp.exe
C:\Programmi\Adobe\Acrobat 7.0\Distillr\Acrotray.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Programmi\Messenger\msmsgs.exe
C:\Programmi\MSN Messenger\msnmsgr.exe
C:\Programmi\Asus\Asus ChkMail\ChkMail.exe
C:\Programmi\Asus\ASUS Hotkey\Hotkey.exe
C:\WINDOWS\ATK0100\ATKOSD.exe
C:\Programmi\Digisoft AntiDialer\AntiDialer.exe
C:\Programmi\Adobe\Acrobat 7.0\Acrobat\acrobat_sl.exe
C:\Programmi\StopDialers\StopDialers.exe
C:\WINDOWS\System32\wuauclt.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Programmi\WinRAR\WinRAR.exe
C:\DOCUME~1\Renzini\IMPOST~1\Temp\Rar$EX00.896\Hij ackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://securityresponse.symantec.com...r/fix_homepage
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.asus.com.tw
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Collegamenti
R3 - URLSearchHook: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\Programmi\Spybot - Search & Destroy\SDHelper.dll
O2 - BHO: AcroIEToolbarHelper Class - {AE7CD045-E861-484f-8273-0445EE161910} - C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll
O3 - Toolbar: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll
O4 - HKLM\..\Run: [Hcontrol] C:\WINDOWS\ATK0100\Hcontrol.exe
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [SiSUSBRG] C:\WINDOWS\SiSUSBrg.exe
O4 - HKLM\..\Run: [ASUS Live Update] C:\Programmi\ASUS\ASUS Live Update\ALU.exe
O4 - HKLM\..\Run: [Power_Gear] C:\Progra~1\ASUS\Power4 Gear\BatteryLife.exe 1
O4 - HKLM\..\Run: [ATIPTA] C:\Progra~1\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [SynTPLpr] C:\Programmi\Synaptics\SynTP\SynTPLpr.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Programmi\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [InCD] C:\Programmi\Ahead\InCD\InCD.exe
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb0 9.exe
O4 - HKLM\..\Run: [ccApp] "C:\Programmi\File comuni\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [osCheck] "C:\Programmi\Norton AntiVirus\osCheck.exe"
O4 - HKLM\..\Run: [Symantec PIF AlertEng] "C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PIFSvc.exe" /a /m "C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\AlertEng.dll"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [Acrobat Assistant 7.0] "C:\Programmi\Adobe\Acrobat 7.0\Distillr\Acrotray.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [msnmsgr] "C:\Programmi\MSN Messenger\msnmsgr.exe" /background
O4 - Startup: CD-MENU.LNK = G:\MENU.exe
O4 - Startup: MSWin-1216914265.exe
O4 - Startup: Stop Dialers.lnk = C:\Programmi\StopDialers\StopDialers.exe
O4 - Global Startup: ASUS ChkMail.lnk = C:\Programmi\Asus\Asus ChkMail\ChkMail.exe
O4 - Global Startup: Hotkey.lnk = C:\Programmi\Asus\ASUS Hotkey\Hotkey.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Programmi\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Digisoft AntiDialer.lnk = C:\Programmi\Digisoft AntiDialer\AntiDialer.exe
O4 - Global Startup: Avvio veloce di Adobe Acrobat.lnk = ?
O8 - Extra context menu item: Converti destinazione link in Adobe PDF - res://C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Converti destinazione link in file PDF esistente - res://C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Converti i link selezionati in Adobe PDF - res://C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECaptureSelLinks.html
O8 - Extra context menu item: Converti i link selezionati in file PDF esistente - res://C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppendSelLinks.html
O8 - Extra context menu item: Converti in Adobe PDF - res://C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Converti nel file PDF esistente - res://C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: Converti selezione in Adobe PDF - res://C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIECapture.html
O8 - Extra context menu item: Converti selezione in file PDF esistente - res://C:\Programmi\Adobe\Acrobat 7.0\Acrobat\AcroIEFavClient.dll/AcroIEAppend.html
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O14 - IERESET.INF: START_PAGE_URL=http://www.asus.com.tw
O23 - Service: Adobe LM Service - Adobe Systems - C:\Programmi\File comuni\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Unknown owner - C:\Programmi\File comuni\Symantec Shared\ccSvcHst.exe" /h ccCommon (file missing)
O23 - Service: Symantec Settings Manager (ccSetMgr) - Unknown owner - C:\Programmi\File comuni\Symantec Shared\ccSvcHst.exe" /h ccCommon (file missing)
O23 - Service: Symantec Lic NetConnect service (CLTNetCnService) - Unknown owner - C:\Programmi\File comuni\Symantec Shared\ccSvcHst.exe" /h ccCommon (file missing)
O23 - Service: InCD Helper (InCDsrv) - AHEAD Software - C:\Programmi\Ahead\InCD\InCDsrv.exe
O23 - Service: Convalida password di Symantec IS (ISPwdSvc) - Symantec Corporation - C:\Programmi\Norton AntiVirus\isPwdSvc.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
O23 - Service: LiveUpdate Notice Service Ex (LiveUpdate Notice Ex) - Unknown owner - C:\Programmi\File comuni\Symantec Shared\ccSvcHst.exe" /h ccCommon (file missing)
O23 - Service: LiveUpdate Notice Service - Unknown owner - C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PIFSvc.exe" /m "C:\Programmi\File comuni\Symantec Shared\PIF\{B8E1DD85-8582-4c61-B58F-2F227FCA9A08}\PifEng.dll (file missing)
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\CCPD-LC\symlcsvc.exe
O23 - Service: Symantec AppCore Service (SymAppCore) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\AppCore\AppSvc32.exe
O23 - Service: Utilità di pianificazione di LiveUpdate automatico - Symantec Corporation - C:\Programmi\Symantec\LiveUpdate\ALUSchedulerSvc.e xe

secondo te può avermi eliminato i virus che norton mi bloccava e che non riuscivo a trovare, provenienti dai file spoolv32.exe e pa_018.exe??
grazie