Cheval de troi et deux erreures inconues

bonjour,
jai un problem avec mon ordinateur or je ne sais pas de quoi il s'agit...mon ordinateur est tres lent jutilise avast anti-virus et il a pu detecter 2 chevaux de troi et 2 erreures inconues... voici le scan de hijackthis
jaimerai savoir ce que je odois faire pour resoudre ce problem
merci

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 21:25:37, on 23/02/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

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\system32\svchost.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe
C:\WINDOWS\VM_STI.EXE
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Menara\dslmon.exe
C:\WINDOWS\system32\spool\drivers\w32x86\3\CAP3LAK.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\wdfmgr.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\WINDOWS\system32\wscntfy.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\WINDOWS\System32\alg.exe
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\SNDVOL32.EXE
C:\WINDOWS\system32\CAP3RSK.EXE
C:\WINDOWS\SYSTEM32\SPOOL\DRIVERS\W32X86\3\CAP3SWK.EXE
C:\Program Files\Adobe\Acrobat 7.0\Reader\AcroRd32.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Program Files\Alwil Software\Avast4\ashSimpl.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Program Files\WinRAR\WinRAR.exe
C:\DOCUME~1\ZINBI\LOCALS~1\Temp\Rar$EX00.043\HijackThis.exe
C:\WINDOWS\system32\wbem\wmiprvse.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,SearchAssistant = http://search.imesh.com/sidebar.html?src=ssb
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.bing.com/spresults.aspx
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.ca/?gws_rd=ssl
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = Menara
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
F2 - REG:system.ini: UserInit=C:\WINDOWS\system32\userinit.exe,C:\WINDOWS\system32\ntos.exe,
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [MSPY2002] C:\WINDOWS\system32\IME\PINTLGNT\ImScInst.exe /SYNC
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_01\bin\jusched.exe"
O4 - HKLM\..\Run: [CAP3ON] C:\WINDOWS\system32\spool\drivers\w32x86\3\CAP3ONN.EXE
O4 - HKLM\..\Run: [BigDogPath] C:\WINDOWS\VM_STI.EXE Vimicro USB PC Camera (VC0305)
O4 - HKLM\..\RunOnce: [MessengerPlusLiveUninstall] "C:\DOCUME~1\ZINBI\LOCALS~1\Temp\MsgPlusUninstall.exe" /Cleanup
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Global Startup: DSLMON.lnk = C:\Program Files\Menara\dslmon.exe
O4 - Global Startup: Fenêtre d'état de Canon LASER SHOT LBP-1120.LNK = C:\WINDOWS\system32\spool\drivers\w32x86\3\CAP3LAK.EXE
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe (file missing)
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - C:\WINDOWS\bdoscandel.exe (file missing)
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O16 - DPF: {20A60F0D-9AFA-4515-A0FD-83BD84642501} (Checkers Class) - http://messenger.zone.msn.com/binary/msgrchkr.cab56986.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/...
O16 - DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} (MessengerStatsClient Class) - http://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{2A19334C-14C5-43EB-B0A0-DF7834393A27}: NameServer = 212.217.0.14 196.217.246.210
O17 - HKLM\System\CS1\Services\Tcpip\..\{2A19334C-14C5-43EB-B0A0-DF7834393A27}: NameServer = 212.217.0.14 196.217.246.210
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe