Virus rootkit-gen

Bonjour,
Mon antivirus avast a détecté win32 rootkit-gen. J'ai suivi la procédure d'avast (supprimer). Un ami a installé et scanné mon ordinateur avec Spyware TerminatorSetup. Depuis je n'ai plus d'icones sur le bureau, je ne peux pas restaurer, je ne peux pas copier coller, je ne peux pas graver ni me connecter à internet, j'ai des tas de messages erreurs...

Merci de bien vouloir m'aider au plus vite car c'est l'ordinateur principal de l'école et tout est bloqué...
Cordialement

Voici le résultat hijackthis:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 22:47:00, on 04/06/2008
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)
Boot mode: Normal

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\S24EvMon.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\lxdiserv.exe
C:\WINDOWS\System32\lxdicoms.exe
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\WINDOWS\System32\PAStiSvc.exe
C:\Program Files\RealVNC\VNC4\WinVNC4.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\ATK0100\Hcontrol.exe
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\Apoint2K\Apoint.exe
C:\Progra~1\ATI Technologies\ATI Control Panel\atiptaxx.exe
C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd.exe
C:\Program Files\Lexmark 3500-4500 Series\lxdimon.exe
C:\Program Files\Lexmark 3500-4500 Series\lxdiamon.exe
C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe
C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE
C:\Program Files\ASUS\Asus ChkMail\ChkMail.exe
C:\Program Files\ASUS\ASUS Hotkey\Hotkey.exe
C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\Apoint2K\Apntex.exe
C:\WINDOWS\ATK0100\ATKOSD.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = https://www.asus.com/tw/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,SearchAssistant = http://www.crawler.com/search/ie.aspx?tb_id=60327
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,CustomizeSearch = http://dnl.crawler.com/support/sa_customize.aspx?TbId=60327
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
R3 - URLSearchHook: (no name) - {1CB20BF0-BBAE-40A7-93F4-6435FF3D0411} - C:\PROGRA~1\Crawler\Toolbar\ctbr.dll
O2 - BHO: Lexmark Barre d'outils - {1017A80C-6F09-4548-A84D-EDD6AC9525F0} - C:\Program Files\Lexmark Toolbar\toolband.dll
O2 - BHO: (no name) - {1CB20BF0-BBAE-40A7-93F4-6435FF3D0411} - C:\PROGRA~1\Crawler\Toolbar\ctbr.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O2 - BHO: Google Toolbar Notifier BHO - {AF69DE43-7D58-4638-B6FA-CE66B5AD205D} - C:\Program Files\Google\GoogleToolbarNotifier\2.1.1119.1736\swg.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Lexmark Barre d'outils - {1017A80C-6F09-4548-A84D-EDD6AC9525F0} - C:\Program Files\Lexmark Toolbar\toolband.dll
O3 - Toolbar: Barre d'outils &Crawler - {4B3803EA-5230-4DC3-A7FC-33638F3D3542} - C:\PROGRA~1\Crawler\Toolbar\ctbr.dll
O4 - HKLM\..\Run: [Hcontrol] C:\WINDOWS\ATK0100\Hcontrol.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [ATIModeChange] Ati2mdxx.exe
O4 - HKLM\..\Run: [Apoint] C:\Program Files\Apoint2K\Apoint.exe
O4 - HKLM\..\Run: [ASUS Live Update] C:\Program Files\ASUS\ASUS Live Update\ALU.exe
O4 - HKLM\..\Run: [Power_Gear] C:\Progra~1\ASUS\Power4 Gear\BatteryLife.exe 1
O4 - HKLM\..\Run: [ATIPTA] C:\Progra~1\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [PRONoMgr.exe] c:\Program Files\Intel\PROSetWireless\NCS\PROSet\PRONoMgr.exe
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [HP Software Update] "C:\Program Files\Hewlett-Packard\HP Software Update\HPWuSchd.exe"
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb09.exe
O4 - HKLM\..\Run: [HP Component Manager] "C:\Program Files\HP\hpcoretech\hpcmpmgr.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [lxdimon.exe] "C:\Program Files\Lexmark 3500-4500 Series\lxdimon.exe"
O4 - HKLM\..\Run: [lxdiamon] "C:\Program Files\Lexmark 3500-4500 Series\lxdiamon.exe"
O4 - HKLM\..\Run: [FaxCenterServer] "C:\Program Files\\Lexmark Fax Solutions\fm3032.exe" /s
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_03\bin\jusched.exe"
O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files\Adobe\Reader 8.0\Reader\Reader_sl.exe"
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [H/PC Connection Agent] "C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE"
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized
O4 - HKUS\S-1-5-21-1872817864-1992745823-1408929922-1005\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background (User '?')
O4 - HKUS\S-1-5-21-1872817864-1992745823-1408929922-1005\..\Run: [H/PC Connection Agent] "C:\Program Files\Microsoft ActiveSync\WCESCOMM.EXE" (User '?')
O4 - HKUS\S-1-5-21-1872817864-1992745823-1408929922-1005\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\GoogleToolbarNotifier.exe (User '?')
O4 - HKUS\S-1-5-21-1872817864-1992745823-1408929922-1005\..\Run: [Skype] "C:\Program Files\Skype\Phone\Skype.exe" /nosplash /minimized (User '?')
O4 - HKUS\S-1-5-18\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User '?')
O4 - HKUS\.DEFAULT\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\CTFMON.EXE (User 'Default user')
O4 - Global Startup: ASUS ChkMail.lnk = C:\Program Files\ASUS\Asus ChkMail\ChkMail.exe
O4 - Global Startup: Hotkey.lnk = C:\Program Files\ASUS\ASUS Hotkey\Hotkey.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\Hewlett-Packard\Digital Imaging\bin\hpqtra08.exe
O4 - Global Startup: Outil de mise à jour Google.lnk = C:\Program Files\Google\Google Updater\GoogleUpdater.exe
O8 - Extra context menu item: Crawler Search - tbr:iemenu
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~3\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Console Java (Sun) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_03\bin\ssv.dll
O9 - Extra button: Créer un Favori de l'appareil mobile - {2EAF5BB1-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\INETREPL.DLL
O9 - Extra button: (no name) - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\INETREPL.DLL
O9 - Extra 'Tools' menuitem: Créer un Favori de l'appareil mobile... - {2EAF5BB2-070F-11D3-9307-00C04FAE2D4F} - C:\Program Files\Microsoft ActiveSync\INETREPL.DLL
O9 - Extra button: Recherche - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~3\OFFICE11\REFIEBAR.DLL
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
O12 - Plugin for .mid: C:\Program Files\Internet Explorer\PLUGINS\npqtplugin2.dll
O14 - IERESET.INF: START_PAGE_URL=https://www.asus.com/tw/
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\FICHIE~1\Skype\SKYPE4~1.DLL
O18 - Protocol: tbr - {4D25FB7A-8902-4291-960E-9ADA051CFBBF} - C:\PROGRA~1\Crawler\Toolbar\ctbr.dll
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: Ati HotKey Poller - Unknown owner - C:\WINDOWS\System32\Ati2evxx.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
O23 - Service: Google Updater Service (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: LexBce Server (LexBceS) - Lexmark International, Inc. - C:\WINDOWS\system32\LEXBCES.EXE
O23 - Service: lxdiCATSCustConnectService - Lexmark International, Inc. - C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\\lxdiserv.exe
O23 - Service: lxdi_device - - C:\WINDOWS\System32\lxdicoms.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\System32\HPZipm12.exe
O23 - Service: RegSrvc - Intel Corporation - C:\WINDOWS\System32\RegSrvc.exe
O23 - Service: Spectrum24 Event Monitor (S24EventMonitor) - Intel Corporation - C:\WINDOWS\System32\S24EvMon.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
O23 - Service: STI Simulator - Unknown owner - C:\WINDOWS\System32\PAStiSvc.exe
O23 - Service: VNC Server Version 4 (WinVNC4) - RealVNC Ltd. - C:\Program Files\RealVNC\VNC4\WinVNC4.exe