Sorry for annoying you with my desperate cry of help, but I'm italian and not too good with the english language, so I'll try to go straight to the point: my poor pc got something, because every time I've tried to open Task Manager, it didn't open, and everytime I've tried to save something with Explorer, Firefox, MSN MEssenger, Word, those programs eventually crashed.
So I've ran Reg Cleaner, and I found out that CCapp1.exe was runninge, described like "Antivirus Program", but I've never seen it before.
Please, do you have some kind of idea of what is happening?
Thank you so much for listening to my desperate speech.

Here, for who is interested, my Hijack this log:

Logfile of HijackThis v1.99.1
Scan saved at 18.31.21, on 11/01/2006
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\csrss.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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\Programmi\Java\j2re1.4.2_04\bin\jusched.exe
C:\Programmi\Trend Micro\Internet Security 12\pccguide.exe
C:\WINDOWS\System32\RUNDLL32.EXE
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S10IC2.EXE
C:\Programmi\DAEMON Tools\daemon.exe
C:\WINDOWS\System32\rundll32.exe
C:\Programmi\MSN Messenger\msnmsgr.exe
C:\WINDOWS\System32\ctfmon.exe
C:\Programmi\WIDCOMM\Software Bluetooth\bin\btwdins.exe
C:\WINDOWS\System32\drivers\CDAC11BA.EXE
C:\Programmi\File comuni\EPSON\EBAPI\SAgent2.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\PROGRA~1\TRENDM~1\INTERN~1\PcCtlCom.exe
C:\WINDOWS\System32\svchost.exe
C:\PROGRA~1\TRENDM~1\INTERN~1\Tmntsrv.exe
C:\Programmi\Mozilla Firefox\firefox.exe
C:\PROGRA~1\TRENDM~1\INTERN~1\tmproxy.exe
C:\WINDOWS\System32\wdfmgr.exe
C:\WINDOWS\System32\UAService7.exe
C:\PROGRA~1\TRENDM~1\INTERN~1\TmPfw.exe
C:\Documents and Settings\andrea\Desktop\hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.p2p-load.de/share/?l=e
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.p2p-load.de/share/?l=e
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.google.it/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = about:blank
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINDOWS\System\blank.htm
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Local Page = C:\WINDOWS\System\blank.htm
R3 - Default URLSearchHook is missing
O1 - Hosts: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
O1 - Hosts: <HTML><HEAD>
O1 - Hosts: <TITLE>404 Not Found</TITLE>
O1 - Hosts: </HEAD><BODY>
O1 - Hosts: <H1>Not Found</H1>
O1 - Hosts: The requested URL /stat.dat was not found on this server.<P>
O1 - Hosts: </BODY></HTML>
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Programmi\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: PCTools Site Guard - {5C8B2A36-3DB1-42A4-A3CB-D426709BBFEB} - C:\PROGRA~1\SPYWAR~1\tools\iesdsg.dll
O2 - BHO: PCTools Browser Monitor - {B56A7D7D-6927-48C8-A975-17DF180C71AC} - C:\PROGRA~1\SPYWAR~1\tools\iesdpb.dll
O2 - BHO: (no name) - {BC7DC8F7-550D-4010-9D30-F42FE7771991} - (no file)
O2 - BHO: (no name) - {FFFFFEF0-5B30-21D4-945D-000000000000} - C:\PROGRA~1\STARDO~1\SDIEInt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Programmi\Java\j2re1.4.2_04\bin\jusched.exe
O4 - HKLM\..\Run: [NetLimiter] C:\Programmi\NetLimiter\NetLimiter.exe /s
O4 - HKLM\..\Run: [pccguide.exe] "C:\Programmi\Trend Micro\Internet Security 12\pccguide.exe"
O4 - HKLM\..\Run: [svshost32] svshost32.exe
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [NvMediaCenter] RUNDLL32.EXE C:\WINDOWS\System32\NvMcTray.dll,NvTaskbarInit
O4 - HKLM\..\Run: [QuickTime Task] "C:\Programmi\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [EPSON Stylus C62 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S10IC2.EXE /P23 "EPSON Stylus C62 Series" /O6 "USB001" /M "Stylus C62"
O4 - HKLM\..\Run: [DAEMON Tools] "C:\Programmi\DAEMON Tools\daemon.exe" -lang 1033
O4 - HKLM\..\Run: [Antivirus Protection] CCapp1.exe
O4 - HKLM\..\RunServices: [svshost32] svshost32.exe
O4 - HKLM\..\RunServices: [Antivirus Protection] CCapp1.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Programmi\MSN Messenger\msnmsgr.exe" /background
O4 - HKCU\..\Run: [svshost32] svshost32.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [EPSON Stylus C62 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_S10IC2.EXE /A "C:\WINDOWS\System32\E_SB.tmp"
O4 - HKCU\..\Run: [Antivirus Protection] CCapp1.exe
O4 - HKCU\..\RunServices: [svshost32] svshost32.exe
O4 - HKCU\..\RunServices: [Antivirus Protection] CCapp1.exe
O8 - Extra context menu item: Download with Star Downloader - C:\Programmi\Star Downloader\sdie.htm
O8 - Extra context menu item: E&sporta in Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Invia a &Bluetooth - C:\Programmi\Software Bluetooth\btsendto_ie_ctx.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\j2re1.4.2_04\bin\npjpi142_04.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Programmi\Java\j2re1.4.2_04\bin\npjpi142_04.dll
O9 - Extra button: Spyware Doctor - {2D663D1A-8670-49D9-A1A5-4C56B4E14E84} - C:\PROGRA~1\SPYWAR~1\tools\iesdpb.dll
O9 - Extra button: Ricerche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: ICQ 4 - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Programmi\ICQLite\ICQLite.exe (file missing)
O9 - Extra 'Tools' menuitem: ICQ Lite - {B863453A-26C3-4e1f-A54D-A2CD196348E9} - C:\Programmi\ICQLite\ICQLite.exe (file missing)
O9 - Extra button: @btrez.dll,-4015 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Programmi\Software Bluetooth\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: @btrez.dll,-4017 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Programmi\Software Bluetooth\btsendto_ie.htm
O14 - IERESET.INF: START_PAGE_URL=http://www.fastweb.it
O15 - Trusted Zone: www.archiviosex.net
O15 - Trusted Zone: www.skymasters.biz
O16 - DPF: {00B71CFB-6864-4346-A978-C0A14556272C} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab31267.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://spaces.msn.com//PhotoUpload/MsnPUpld.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedContent/common/bin/cabsa.cab
O16 - DPF: {6E5A37BF-FD42-463A-877C-4EB7002E68AE} (Housecall ActiveX 6.5) - http://eu-housecall.trendmicro-europe.com/housecall/applet/html/native/x86/win32/activex/hcImpl.cab
O16 - DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - Winlogon Notify: iexplore - gref4.dll (file missing)
O23 - Service: Bluetooth Service (btwdins) - Unknown owner - C:\Programmi\WIDCOMM\Software Bluetooth\bin\btwdins.exe
O23 - Service: C-DillaCdaC11BA - Macrovision - C:\WINDOWS\System32\drivers\CDAC11BA.EXE
O23 - Service: EPSON Printer Status Agent2 (EPSONStatusAgent2) - SEIKO EPSON CORPORATION - C:\Programmi\File comuni\EPSON\EBAPI\SAgent2.exe
O23 - Service: Groove Games Licensing Service - Groove Games - C:\Programmi\File comuni\Groove Games Shared\Service\ggameslicsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Programmi\File comuni\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Programmi\iPod\bin\iPodService.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: Trend Micro Central Control Component (PcCtlCom) - Trend Micro Incorporated. - C:\PROGRA~1\TRENDM~1\INTERN~1\PcCtlCom.exe
O23 - Service: Power Manager (PowerManager) - Unknown owner - C:\WINDOWS\svchost.exe (file missing)
O23 - Service: Remote Packet Capture Protocol v.0 (experimental) (rpcapd) - Unknown owner - %ProgramFiles%\WinPcap\rpcapd.exe" -d -f "%ProgramFiles%\WinPcap\rpcapd.ini (file missing)
O23 - Service: Trend Micro Real-time Service (Tmntsrv) - Trend Micro Incorporated. - C:\PROGRA~1\TRENDM~1\INTERN~1\Tmntsrv.exe
O23 - Service: Trend Micro Personal Firewall (TmPfw) - Trend Micro Inc. - C:\PROGRA~1\TRENDM~1\INTERN~1\TmPfw.exe
O23 - Service: Trend Micro Proxy Service (tmproxy) - Trend Micro Inc. - C:\PROGRA~1\TRENDM~1\INTERN~1\tmproxy.exe
O23 - Service: SecuROM User Access Service (V7) (UserAccess7) - Sony DADC Austria AG. - C:\WINDOWS\System32\UAService7.exe

Hi masclez, welcome to DaniWeb :D

You first need to help protect your computer by getting the Windows Updates (not SP2 yet), and do some basic cleanup. Instructions for all of this can be found in the links below (if you need help with any of the instructions, feel free to ask).

When you've finished, close any open browser windows, scan with HijackThis, and post a new log please, and we'll help you clean up anything that's still remaining.

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