Fenêtre intempestive

J'ai des fenêtre qui s'ouvrent toutes seules sous windows xp.
voici le résultat du fichier hijackthis.txt.
merci de m'aider.

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 19:20:41, on 02/12/2010
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\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Common Files\VMware\USB\vmware-usbarbitrator.exe
C:\WINDOWS\system32\vmnat.exe
C:\WINDOWS\system32\vmnetdhcp.exe
C:\Program Files\VMware\VMware Workstation\vmware-authd.exe
C:\Program Files\VMware\VMware Workstation\vmware-tray.exe
C:\Program Files\EoRezo\eorezo.exe
C:\Documents and Settings\Administrateur\Application Data\EoRezo\EoRezo\SoftwareUpdateHP.exe
C:\Program Files\Alwil Software\Avast5\avastUI.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Windows Live\Messenger\msnmsgr.exe
C:\Program Files\Windows Live\Contacts\wlcomm.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\wuauclt.exe
C:\Program Files\VMware\VMware Workstation\vmware.exe
C:\Program Files\VMware\VMware Workstation\vmware-vmx.exe
C:\WINDOWS\explorer.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Mozilla Firefox\plugin-container.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://y.lo.st
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
O2 - BHO: Aide pour le lien d'Adobe PDF Reader - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Fichiers communs\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - (no file)
O2 - BHO: EOBHO - {C10DC1F4-CCDF-4224-A24D-B23AFC3573C8} - C:\Program Files\EoRezo\EoRezoBHO.dll
O4 - HKLM\..\Run: [vmware-tray] "C:\Program Files\VMware\VMware Workstation\vmware-tray.exe"
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [eorezo] "C:\Program Files\EoRezo\eorezo.exe"
O4 - HKLM\..\Run: [SoftwareHelper] C:\Documents and Settings\Administrateur\Application Data\EoRezo\EoRezo\SoftwareUpdateHP.exe
O4 - HKLM\..\Run: [avast5] "C:\Program Files\Alwil Software\Avast5\avastUI.exe" /nogui
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [msnmsgr] "C:\Program Files\Windows Live\Messenger\msnmsgr.exe" /background
O4 - HKUS\S-1-5-19\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\RunOnce: [nlpo_01] cmd.exe /c md "%USERPROFILE%\Local Settings\Temp" (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\RunOnce: [nlpo_03] rundll32 advpack.dll,LaunchINFSection nlite.inf,nLiteReg (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-19\..\RunOnce: [nlpo_04] rundll32 advpack.dll,LaunchINFSection nlite.inf,S (User 'SERVICE LOCAL')
O4 - HKUS\S-1-5-20\..\Run: [CTFMON.EXE] C:\WINDOWS\system32\CTFMON.EXE (User 'SERVICE RÉSEAU')
O4 - HKUS\S-1-5-20\..\RunOnce: [nlpo_01] cmd.exe /c md "%USERPROFILE%\Local Settings\Temp" (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: Adobe Reader Synchronizer.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\AdobeCollabSync.exe
O4 - Global Startup: Lancement rapide d'Adobe Reader.lnk = C:\Program Files\Adobe\Reader 8.0\Reader\reader_sl.exe
O8 - Extra context menu item: E&xporter vers Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O10 - Unknown file in Winsock LSP: c:\program files\vmware\vmware workstation\vsocklib.dll
O10 - Unknown file in Winsock LSP: c:\program files\vmware\vmware workstation\vsocklib.dll
O23 - Service: avast! Antivirus - AVAST Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: avast! Mail Scanner - AVAST Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: avast! Web Scanner - AVAST Software - C:\Program Files\Alwil Software\Avast5\AvastSvc.exe
O23 - Service: Service Google Update (gupdate) (gupdate) - Google Inc. - C:\Program Files\Google\Update\GoogleUpdate.exe
O23 - Service: VMware Agent Service (ufad-ws60) - VMware, Inc. - C:\Program Files\VMware\VMware Workstation\vmware-ufad.exe
O23 - Service: VMware Authorization Service (VMAuthdService) - VMware, Inc. - C:\Program Files\VMware\VMware Workstation\vmware-authd.exe
O23 - Service: VMware DHCP Service (VMnetDHCP) - VMware, Inc. - C:\WINDOWS\system32\vmnetdhcp.exe
O23 - Service: VMware USB Arbitration Service (VMUSBArbService) - VMware, Inc. - C:\Program Files\Common Files\VMware\USB\vmware-usbarbitrator.exe
O23 - Service: VMware NAT Service - VMware, Inc. - C:\WINDOWS\system32\vmnat.exe