Virus multiples

Salut tout le monde.
Voila j'ai un super pb de virus, mon pc déconne a fd, m'ouvre nimporte quoi, s'arrête tout seul...
Heuresement j'airéussi à faire un scan av Hijackthis et voi la ce qu'il révèle:

Logfile of HijackThis v1.99.1
Scan saved at 00:16:14, on 01/01/2003
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

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\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe
C:\WINDOWS\help\svchost.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
C:\WINDOWS\help\imapi.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\WINDOWS\System32\Ati2evxx.exe
C:\WINDOWS\system32\ati2sgag.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\TEMP\12.tmp
C:\WINDOWS\bhagent.exe
C:\WINDOWS\System32\svchost.exe
F:\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.free-firefox.dl.am
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - (no file)
F3 - REG:win.ini: run=C:\WINDOWS\TEMP\B.tmp
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [EPSON Stylus DX4200 Series] C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\E_FATIAEE.EXE /P26 "EPSON Stylus DX4200 Series" /O6 "USB001" /M "Stylus DX4200"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Fichiers communs\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [Imapi] C:\WINDOWS\\help\svchost.exe
O4 - HKLM\..\Run: [System] C:\WINDOWS\System32\kernels1118.exe
O4 - HKLM\..\Run: [ControlPanel] C:\WINDOWS\System32\cmd32.exe internat.dll,LoadKeyboardProfile
O4 - HKLM\..\Run: [xp_system] C:\WINDOWS\TEMP\B.tmp
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKCU\..\Run: [xp_system] C:\WINDOWS\TEMP\B.tmp
O4 - Global Startup: Akimania.com.lnk = C:\Program Files\Akimania.com\Pochette express pro v5.0\Akimania.com.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O4 - Global Startup: VPro500.lnk = C:\WINDOWS\VPro500.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_04\bin\npjpi150_04.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_04\bin\npjpi150_04.dll
O9 - Extra button: Allocam Multi Vision - {2D6B57BF-71FA-41A3-BDC5-3B5A25813D2E} - C:\PROGRA~1\ALLOCA~1\allocam.exe (file missing)
O9 - Extra 'Tools' menuitem: Allocam Multi Vision - {2D6B57BF-71FA-41A3-BDC5-3B5A25813D2E} - C:\PROGRA~1\ALLOCA~1\allocam.exe (file missing)
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O9 - Extra 'Tools' menuitem: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\MSMSGS.EXE
O10 - Broken Internet access because of LSP provider 'rsvp32_2.dll' missing
O16 - DPF: {2357B3CF-7F8D-4451-8D81-FD6097610AEE} - https://www.bobtv.fr/download/cfweb_www.bobtv.fr-download_instmodule.exe
O16 - DPF: {5D6F45B3-9043-443D-A792-115447494D24} (UnoCtrl Class) - http://messenger.zone.msn.com/FR-FR/a-UNO1/GAME_UNO1.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{2D31FDF1-846D-4180-87B9-C6907FA20A4E}: NameServer = 212.30.96.108
O17 - HKLM\System\CCS\Services\Tcpip\..\{36FA681B-3082-4F32-8067-30F9E6507D06}: NameServer = 212.30.96.108
O17 - HKLM\System\CCS\Services\Tcpip\..\{610DCE3D-4DE2-40B7-936A-EA44585BDEF8}: NameServer = 212.30.96.108
O17 - HKLM\System\CCS\Services\Tcpip\..\{68533139-8343-4F56-8E22-4F1E7D876358}: NameServer = 212.30.96.108
O17 - HKLM\System\CCS\Services\Tcpip\..\{71AAF3B1-49DE-49EB-85A2-9097DB47A4B2}: NameServer = 212.30.96.108
O17 - HKLM\System\CCS\Services\Tcpip\..\{8AF94795-BF57-4FD8-AD70-30F3DBABAF43}: NameServer = 212.30.96.108
O17 - HKLM\System\CCS\Services\Tcpip\..\{BFC59596-D800-4661-A8B8-92D5F2FB6E6E}: NameServer = 212.30.96.108
O17 - HKLM\System\CS1\Services\Tcpip\..\{2D31FDF1-846D-4180-87B9-C6907FA20A4E}: NameServer = 212.30.96.108
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 - AppInit_DLLs: C:\WINDOWS\System32\systk.dll
O21 - SSODL: IVMxlCYHN - {38529C79-92F8-36D3-08E3-4D4265BF510E} - C:\WINDOWS\System32\zsdm.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - Unknown owner - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.exe
O23 - Service: ATI Smart - Unknown owner - C:\WINDOWS\system32\ati2sgag.exe
O23 - Service: avast! Antivirus - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Fichiers communs\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPodService - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Macromedia Updater (mmupdate) - Unknown owner - C:\WINDOWS\TEMP\12.tmp".exe (file missing)
O23 - Service: Sharing Messenger Folders Windows XP (SMFWX) - Unknown owner - C:\WINDOWS\bhagent.exe

Merci de me dire comment faire, quels logiciels télécharger...