rieccomi!
grazie per la risposta; stamattina ho la macchina sottomano e quando l'ho accesa oltre al solito file ho scoperto che c'e' un problema tutto nuovo in una libreria, infatti mi dice:

errore durante il caricamento di w003eaaf.dll - impossibile trovare il modulo specificato
non trovo pero' nulla in rete relativo a questo file

ad ogni modo ho fatto una scansione con hijackthis e questo e' il log:



Logfile of HijackThis v1.99.1
Scan saved at 9.51.07, on 22/08/2006
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\U2VyZ2lvIFNpcmFnbmE\command.exe
C:\WINNT\System32\svchost.exe
C:\Programmi\File comuni\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\Programmi\Norton AntiVirus\navapsvc.exe
C:\PROGRA~1\Alice\ALICEE~1\app\pppoeservice.exe
C:\Programmi\Norton AntiVirus\SAVScan.exe
C:\WINNT\system32\MSTask.exe
C:\VEXPLITE\viritsvc.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\Programmi\RealVNC\VNC4\WinVNC4.exe
C:\WINNT\system32\rundll32.exe
C:\WINNT\Explorer.exe
C:\WINNT\system32\msjava.exe
C:\WINNT\system32\igfxtray.exe
C:\WINNT\system32\hkcmd.exe
C:\WINNT\system32\igfxpers.exe
C:\Programmi\File comuni\Symantec Shared\ccApp.exe
C:\VEXPLITE\MONLITE.EXE
C:\WINNT\system32\ctfmon.exe
C:\VEXPLITE\VIRITEXP.EXE
C:\Documents and Settings\Sergio Siragna\Desktop\morena\hijackthis\HijackThis.exe

F2 - REG:system.ini: Shell=Explorer.exe msjava.exe
F2 - REG:system.ini: UserInit=C:\WINNT\system32\userinit.exe,msjava.exe
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Programmi\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: Yahoo! Toolbar con blocco Pop-Up - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Programmi\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [IgfxTray] C:\WINNT\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINNT\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\WINNT\system32\igfxpers.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINNT\system32\NeroCheck.exe
O4 - HKLM\..\Run: [ccApp] "C:\Programmi\File comuni\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe /Consumer
O4 - HKLM\..\Run: [sys33] Sys33.exe
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Programmi\File comuni\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [VIRIT LITE MONITOR] C:\VEXPLITE\MONLITE.EXE
O4 - HKLM\..\Run: [newname] C:\\nwnmc_2.exe
O4 - HKLM\..\Run: [webHancer Survey Companion] C:\Programmi\webHancer\Programs\whsurvey.exe
O4 - HKLM\..\Run: [keyboard] C:\\kybrdc_2.exe
O4 - HKLM\..\Run: [ewr7d71d] RUNDLL32.EXE w003eaaf.dll,n 0017d71c0000000a003eaaf
O4 - HKLM\..\RunServices: [sys33] Sys33.exe
O4 - HKLM\..\RunServices: [Ms Java for Windows NT] msjava.exe
O4 - HKCU\..\Run: [ctfmon.exe] ctfmon.exe
O4 - HKCU\..\Run: [ntdll.dll] ctfmon.exe
O4 - HKCU\..\RunServices: [Ms Java for Windows NT] msjava.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O20 - Winlogon Notify: H323TSP - C:\WINNT\system32\e820lifm182a.dll
O20 - Winlogon Notify: igfxcui - C:\WINNT\SYSTEM32\igfxdev.dll
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Password Validation (ccPwdSvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
O23 - Service: Command Service (cmdService) - Unknown owner - C:\WINNT\U2VyZ2lvIFNpcmFnbmE\command.exe
O23 - Service: Servizio amministrativo di Gestione disco logico (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: Servizio Norton AntiVirus Auto-Protect (navapsvc) - Symantec Corporation - C:\Programmi\Norton AntiVirus\navapsvc.exe
O23 - Service: PPPoE Service (PPPoEService) - Unknown owner - C:\PROGRA~1\Alice\ALICEE~1\app\pppoeservice.exe
O23 - Service: SAVScan - Symantec Corporation - C:\Programmi\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service (SBService) - Symantec Corporation - C:\PROGRA~1\FILECO~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: Virit eXplorer Lite (viritsvclite) - TG Soft Sas www.tgsoft.it - C:\VEXPLITE\viritsvc.exe
O23 - Service: Microsoft Windows Spooler Service (Windows Spooler Service) - Unknown owner - C:\WINNT\services.exe (file missing)
O23 - Service: VNC Server Version 4 (WinVNC4) - Unknown owner - C:\Programmi\RealVNC\VNC4\WinVNC4.exe" -service (file missing)

edit: che la libreria in alto abbia qualcosa a che vedere con questo ultimo "missing file"!? :master: