Fatto, ho installato ZoneAlarm. Questo è il nuovo con l'ultima versione di Hijackthis.
grazie!

Logfile of HijackThis v1.99.1
Scan saved at 12.18.03, on 12/03/2007
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:\WINNT\system32\ZoneLabs\vsmon.exe
C:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
C:\WINNT\system32\spoolsv.exe
C:\Programmi\Symantec AntiVirus\DefWatch.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\hidserv.exe
C:\WINNT\system32\MSTask.exe
C:\Programmi\Symantec AntiVirus\Rtvscan.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\Explorer.EXE
C:\Programmi\Protezione PC\ZoneAlarm\zlclient.exe
C:\Programmi\Protezione PC\Digisoft AntiDialer\AntiDialer.exe
C:\Programmi\SlipStream Web Accelerator\slipgui.exe
C:\Programmi\Internet Explorer\IEXPLORE.EXE
C:\PROGRA~1\WinZip\winzip32.exe
C:\DOCUME~1\ADMINI~1\IMPOST~1\Temp\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.elmecspa.com/mail/RoburEtFides.nsf
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page =
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page =
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {4115122B-85FF-4DD3-9515-F075BEDE5EB5} - (no file)
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\PROTEZ~1\SPYBOT~1\SDHelper.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O3 - Toolbar: SlipStream Web Accelerator - {8B79EE88-E62D-4AA8-B530-CC357BA112B7} - C:\Programmi\SlipStream Web Accelerator\Toolband.dll
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [StatusClient] C:\Programmi\Hewlett-Packard\Toolbox2.0\Apache Tomcat 4.0\webapps\Toolbox\StatusClient\StatusClient.exe /auto
O4 - HKLM\..\Run: [TomcatStartup] C:\Programmi\Hewlett-Packard\Toolbox2.0\hpbpsttp.exe
O4 - HKLM\..\Run: [HPLJ Config] C:\Programmi\Hewlett-Packard\hp LaserJet 1150_1300\SetConfig.exe -c -p -pn "hp LaserJet 1300 PCL 6" -n -l 1040 -sl 120000
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Programmi\File comuni\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [SlipStream] "C:\Programmi\SlipStream Web Accelerator\slipcore.exe"
O4 - HKLM\..\Run: [ccApp] "C:\Programmi\File comuni\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [vptray] C:\PROGRA~1\SYMANT~1\VPTray.exe
O4 - HKLM\..\Run: [Zone Labs Client] "C:\Programmi\Protezione PC\ZoneAlarm\zlclient.exe"
O4 - Global Startup: Digisoft AntiDialer.lnk = C:\Programmi\Protezione PC\Digisoft AntiDialer\AntiDialer.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Programmi\Microsoft Office\Office\OSA9.EXE
O4 - Global Startup: SlipStream Web Accelerator.lnk = C:\Programmi\SlipStream Web Accelerator\slipgui.exe
O17 - HKLM\System\CCS\Services\Tcpip\..\{825B1DE0-AF1C-416C-8860-BB10395DFD95}: NameServer = 193.70.192.25 193.70.152.25
O20 - Winlogon Notify: NavLogon - C:\WINNT\system32\NavLogon.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: Symantec AntiVirus Definition Watcher (DefWatch) - Symantec Corporation - C:\Programmi\Symantec AntiVirus\DefWatch.exe
O23 - Service: Servizio amministrativo di Gestione disco logico (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINNT\system32\HPZipm12.exe
O23 - Service: SAVRoam (SavRoam) - symantec - C:\Programmi\Symantec AntiVirus\SavRoam.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Symantec AntiVirus - Symantec Corporation - C:\Programmi\Symantec AntiVirus\Rtvscan.exe
O23 - Service: SymWMI Service (SymWSC) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINNT\system32\ZoneLabs\vsmon.exe