questo è il messaggio di errore che mi da hijackthis

Logfile of HijackThis v1.99.1
Scan saved at 12.08.11, on 04/12/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\Programmi\File comuni\Symantec Shared\ccSetMgr.exe
C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\SOUNDMAN.EXE
C:\WINDOWS\ALCWZRD.EXE
C:\Programmi\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Programmi\CyberLink\PowerDVD\PDVDServ.exe
C:\Programmi\Microsoft IntelliType Pro\type32.exe
C:\Programmi\Microsoft IntelliPoint\point32.exe
C:\Programmi\File comuni\Symantec Shared\ccApp.exe
C:\Programmi\iTunes\iTunesHelper.exe
C:\Programmi\QuickTime\qttask.exe
C:\Programmi\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe
C:\Programmi\File comuni\Real\Update_OB\realsched.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0F 2.EXE
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0F 2.EXE
C:\Programmi\D-Tools\daemon.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe
C:\Programmi\Prevx1\PXConsole.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Programmi\Messenger\msmsgs.exe
C:\Programmi\Microsoft ActiveSync\WCESCOMM.EXE
C:\Programmi\Creative\MediaSource\Detector\CTDetec t.exe
C:\Programmi\Adobe\Acrobat 6.0\Distillr\acrotray.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
C:\Programmi\File comuni\Symantec Shared\ccProxy.exe
C:\Programmi\Mustek 1200 UB Plus\Driver\WATCH.exe
C:\WINDOWS\system32\CTsvcCDA.EXE
C:\Programmi\Yahoo!\Yahoo! Widget Engine\YahooWidgetEngine.exe
C:\Programmi\Prevx1\PXAgent.exe
C:\Programmi\Yahoo!\Yahoo! Widget Engine\YahooWidgetEngine.exe
C:\Programmi\Yahoo!\Yahoo! Widget Engine\YahooWidgetEngine.exe
C:\Programmi\Yahoo!\Yahoo! Widget Engine\YahooWidgetEngine.exe
C:\WINDOWS\system32\svchost.exe
C:\Programmi\Symantec\LiveUpdate\ALUSchedulerSvc.e xe
C:\Programmi\iPod\bin\iPodService.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Documents and Settings\Cristiano\Desktop\FixAbwiz.exe
C:\Documents and Settings\Cristiano\Desktop\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.altavista.com/
O2 - BHO: Malicious Scripts Scanner - {55EA1964-F5E4-4D6A-B9B2-125B37655FCB} - C:\Documents and Settings\All Users\Dati applicazioni\Prevx\pxbho.dll
O3 - Toolbar: Adobe PDF - {47833539-D0C5-4125-9FA8-0819E2EAAC93} - C:\Programmi\Adobe\Acrobat 6.0\Acrobat\AcroIEFavClient.dll (file missing)
O4 - HKLM\..\Run: [Collegamento alla pagina delle proprietà di High Definition Audio] HDAudPropShortcut.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [AlcWzrd] ALCWZRD.EXE
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [ATIPTA] "C:\Programmi\ATI Technologies\ATI Control Panel\atiptaxx.exe"
O4 - HKLM\..\Run: [RemoteControl] C:\Programmi\CyberLink\PowerDVD\PDVDServ.exe
O4 - HKLM\..\Run: [type32] "C:\Programmi\Microsoft IntelliType Pro\type32.exe"
O4 - HKLM\..\Run: [IntelliPoint] "C:\Programmi\Microsoft IntelliPoint\point32.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: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Programmi\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [Adobe Photo Downloader] "C:\Programmi\Adobe\Photoshop Album Starter Edition\3.0\Apps\apdproxy.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Programmi\File comuni\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [EPSON Stylus Photo R300 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0F 2.EXE /P30 "EPSON Stylus Photo R300 Series" /O6 "USB001" /M "Stylus Photo R300"
O4 - HKLM\..\Run: [Automatico EPSON Stylus Photo R300 Series su PAPERINIK] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S4I0F 2.EXE /P54 "Automatico EPSON Stylus Photo R300 Series su PAPERINIK" /O22 "\\PAPERINIK\Epson R300" /M "Stylus Photo R300"
O4 - HKLM\..\Run: [PinnacleDriverCheck] C:\WINDOWS\system32\\PSDrvCheck.exe
O4 - HKLM\..\Run: [DAEMON Tools-1033] "C:\Programmi\D-Tools\daemon.exe" -lang 1033
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [PrevxOne] "C:\Programmi\Prevx1\PXConsole.exe"
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Programmi\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Programmi\Microsoft ActiveSync\WCESCOMM.EXE"
O4 - HKCU\..\Run: [Creative Detector] C:\Programmi\Creative\MediaSource\Detector\CTDetec t.exe /R
O4 - HKCU\..\Run: [Microsoft Security] C:\WINDOWS\system32\iedunper.exe
O4 - HKCU\..\Run: [Cartella.exe] C:\WINDOWS\system32\winsvc\svc\Cartella.exe
O4 - Startup: Yahoo! Widget Engine.lnk = C:\Programmi\Yahoo!\Yahoo! Widget Engine\YahooWidgetEngine.exe
O4 - Global Startup: Acrobat Assistant.lnk = C:\Programmi\Adobe\Acrobat 6.0\Distillr\acrotray.exe
O4 - Global Startup: Adobe Gamma Loader.exe.lnk = C:\Programmi\File comuni\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Adobe Gamma Loader.lnk = C:\Programmi\File comuni\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Programmi\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Programmi\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: Watch.lnk = C:\Programmi\Mustek 1200 UB Plus\Driver\WATCH.exe
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~4\Office10\EXCEL.EXE/3000
O9 - Extra button: Crea preferiti portatile - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\Programmi\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Programmi\Microsoft ActiveSync\inetrepl.dll
O9 - Extra 'Tools' menuitem: Crea preferiti portatile... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Programmi\Microsoft ActiveSync\inetrepl.dll
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Programmi\Messenger\msmsgs.exe
O15 - Trusted Zone: content.licenseacquisition.org
O15 - Trusted Zone: www.scalalap.com
O15 - Trusted Zone: cds.zangocash.com
O15 - Trusted Zone: static.zangocash.com
O16 - DPF: {17492023-C23A-453E-A040-C7C580BBF700} (Windows Genuine Advantage Validation Tool) - http://go.microsoft.com/fwlink/?linkid=39204
O16 - DPF: {73B9A791-BA9E-418A-B5A4-948B63BE04F7} - http://www.popup-freesex-adv.biz/tialla.exe
O16 - DPF: {BC4268D7-E1C7-47A9-9F84-6BBEE45E6EB4} - http://www.liquirizia.biz/materazzi_...ideoplugin.exe
O17 - HKLM\System\CCS\Services\Tcpip\..\{3E6F58A2-F2FB-4FDC-BBAD-7AA7C0EF0533}: NameServer = 193.70.192.25,217.18.104.12
O17 - HKLM\System\CCS\Services\Tcpip\..\{59E05A06-201E-4598-95F2-C07CD6673527}: NameServer = 193.70.192.25
O17 - HKLM\System\CS1\Services\Tcpip\..\{3E6F58A2-F2FB-4FDC-BBAD-7AA7C0EF0533}: NameServer = 193.70.192.25,217.18.104.12
O17 - HKLM\System\CS2\Services\Tcpip\..\{3E6F58A2-F2FB-4FDC-BBAD-7AA7C0EF0533}: NameServer = 193.70.192.25,217.18.104.12
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
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O23 - Service: .net_csudist - - (no file)
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: AVG E-mail Scanner (AVGEMS) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Network Proxy (ccProxy) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\ccProxy.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: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTsvcCDA.EXE
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Programmi\iPod\bin\iPodService.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~2.EXE
O23 - Service: Macromedia Licensing Service - Unknown owner - C:\Programmi\File comuni\Macromedia Shared\Service\Macromedia Licensing.exe
O23 - Service: Prevx Agent (PREVXAgent) - Unknown owner - C:\Programmi\Prevx1\PXAgent.exe" -f (file missing)
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - C:\Programmi\File comuni\Symantec Shared\SNDSrvc.exe
O23 - Service: Utilità di pianificazione di LiveUpdate automatico - Symantec Corporation - C:\Programmi\Symantec\LiveUpdate\ALUSchedulerSvc.e xe