Aidez moi ordi portable infecté

Bonjour,
voilà on m'a donné un ordinateur portable mais il est infecté et n'a pas d'antivirus pouvez vous m'aidez
à le désinfecter s'il vous plais.
merci

voilà le rapport hijackthis :

Logfile of HijackThis v1.99.1
Scan saved at 16:04:25, on 30/08/2008
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\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\spoolsv.exe
C:\Program Files\Bluetooth Software\bin\btwdins.exe
C:\Program Files\Fichiers communs\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Winamp\winampa.exe
C:\WINDOWS\System32\antiv.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\WINDOWS\System32\Rundll32.exe
C:\WINDOWS\System32\rundll32.exe
C:\WINDOWS\System32\CTFMON.EXE
C:\PROGRA~1\Wanadoo\TaskBarIcon.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Bluetooth Software\BTTray.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\NETGEAR\WG111v2\WG111v2.exe
C:\Documents and Settings\TEMP\Bureau\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Barre d'outils MSN - {BDAD1DAD-C946-4A17-ADC1-64B5B4FF55D0} - C:\Program Files\MSN Toolbar\01.01.2607.0\fr\msntb.dll
O4 - HKLM\..\Run: [WinampAgent] C:\Program Files\Winamp\winampa.exe
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKLM\..\Run: [Java Softe] Java32.com
O4 - HKLM\..\Run: [Microsoft Anivirus Monitor Process] antiv.exe
O4 - HKLM\..\Run: [Microsoft Internet Explorer] C:\WINDOWS\System32\iexplore.exe
O4 - HKLM\..\Run: [Client Server Runtime Process] C:\WINDOWS\System32\csrs.exe
O4 - HKLM\..\Run: [Microsoft Winedows startup] WinKey.exe
O4 - HKLM\..\Run: [Winamp Agent] C:\WINDOWS\System32\winamp.exe
O4 - HKLM\..\Run: [Advanced DHTML Enable] C:\WINDOWS\System32\igvtx.exe
O4 - HKLM\..\Run: [HP Software Update] "C:\Program Files\HP\HP Software Update\HPWuSchd2.exe"
O4 - HKLM\..\Run: [Application Layer Gateway Service] C:\WINDOWS\System32\algs.exe
O4 - HKLM\..\Run: [Windows Logon Application] C:\WINDOWS\System32\logon.exe
O4 - HKLM\..\Run: [runner1] C:\WINDOWS\mrofinu1001186.exe 61A847B5BBF72813329B39577AFF01F0B3E35B6638993F4661AA4EBD86D67C56389B284534F310
O4 - HKLM\..\Run: [WOOWATCH] C:\PROGRA~1\Wanadoo\Watch.exe
O4 - HKLM\..\Run: [WOOTASKBARICON] C:\PROGRA~1\Wanadoo\GestMaj.exe TaskBarIcon.exe
O4 - HKLM\..\RunServices: [Java Softe] Java32.com
O4 - HKLM\..\RunServices: [Microsoft Anivirus Monitor Process] antiv.exe
O4 - HKLM\..\RunServices: [Microsoft Winedows startup] WinKey.exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - Global Startup: BTTray.lnk = ?
O4 - Global Startup: Démarrage rapide du logiciel HP Image Zone.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqthb08.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: NETGEAR WG111v2 Smart Wizard.lnk = C:\Program Files\NETGEAR\WG111v2\WG111v2.exe
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: @btrez.dll,-4015 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\Bluetooth Software\btsendto_ie.htm
O9 - Extra 'Tools' menuitem: @btrez.dll,-4017 - {CCA281CA-C863-46ef-9331-5C8D4460577F} - C:\Program Files\Bluetooth Software\btsendto_ie.htm
O18 - Protocol: widimg - {EE7C2AFF-5742-44FF-BD0E-E521B0D3C3BA} - C:\WINDOWS\System32\btxppanel.dll
O23 - Service: Bluetooth Service (btwdins) - Broadcom Corporation - C:\Program Files\Bluetooth Software\bin\btwdins.exe
O23 - Service: France Telecom Routing Table Service (FTRTSVC) - Unknown owner - C:\WINDOWS\System32\FTRTSVC.exe (file missing)
O23 - Service: hpdj00 - Unknown owner - C:\DOCUME~1\TEMP\LOCALS~1\Temp\hpdj00.exe (file missing)
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe
O23 - Service: Scanning Analist Management System (SAMS) - Unknown owner - C:\WINDOWS\System32\sams.exe (file missing)