Nettoyer et booster mon ordi

Bonjour,
J'ai fait un scan avec hijackthis
que doit je faire maintenan
merci

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 19:07:50, on 4/5/2009
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\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:\WINDOWS\System32\ctfmon.exe
C:\WINDOWS\System32\ctfmon .exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\NETGEAR\WG111v3\WG111v3.exe
C:\Program Files\NETGEAR\WG111v3\WG111v3.exe
c:\Program Files\Numericable\Mon Assistant Internet\bin\mad.exe
c:\Program Files\Numericable\Mon Assistant Internet\bin\mpbtn.exe
C:\PROGRA~1\Motive\ASSTCO~1\MOTIVE~1.EXE
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\MSN\MSNCoreFiles\MSN6.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Alwil Software\Avast4\setup\avast.setup
C:\HiJackThis.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = https://www.google.fr/?gws_rd=ssl
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = Liens
F3 - REG:win.ini: load=C:\WINDOWS\System32\vtutr.exe
O2 - BHO: (no name) - {164213E8-C6B8-4E65-B0EE-313AFB05AC87} - C:\WINDOWS\System32\vtutr.dll
O2 - BHO: (no name) - {7A5565EF-A594-46E4-AF56-FE71AEAFD7D5} - C:\WINDOWS\System32\xxywwwx.dll (file missing)
O2 - BHO: (no name) - {A95B2816-1D7E-4561-A202-68C0DE02353A} - C:\WINDOWS\System32\pmhkntju.dll (file missing)
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\system32\msdxm.ocx
O4 - HKLM\..\Run: [Motive SmartBridge] C:\PROGRA~1\NUMERI~1\MONASS~1\SMARTB~1\MotiveSB.exe
O4 - HKLM\..\Run: [Local Security Authority Service] C:\WINDOWS\System32\lssas.exe
O4 - HKLM\..\Run: [Client Server Runtime Process] C:\WINDOWS\system32\csrs.exe
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [Windows Explorer] C:\WINDOWS\System32\explorer.exe
O4 - HKLM\..\Run: [Application Layer Gateway Service] C:\WINDOWS\System32\algs.exe
O4 - HKLM\..\Run: [Spooler SubSystem App] C:\WINDOWS\System32\spooIsv.exe
O4 - HKLM\..\Run: [PromoReg] C:\WINDOWS\System32\ohsm .exe
O4 - HKCU\..\Run: [CTFMON.EXE] C:\WINDOWS\System32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [DAEMON Tools Lite] "C:\Program Files\DAEMON Tools Lite\daemon.exe"
O4 - HKCU\..\Run: [AdVantage] "C:\Program Files\AdVantage\AdVantage.exe"
O4 - HKCU\..\Run: [goumise] C:\Documents and Settings\goumise\goumise.exe /i
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 - Global Startup: Assistant Smart Wizard NETGEAR pour WG311v3.lnk = C:\Program Files\NETGEAR\WG111v3\WG111v3.exe
O4 - Global Startup: Mon Assistant Internet.lnk = C:\Program Files\Numericable\Mon Assistant Internet\bin\matcli.exe
O4 - Global Startup: NETGEAR WG111v3 Smart Wizard.lnk = C:\Program Files\NETGEAR\WG111v3\WG111v3.exe
O8 - Extra context menu item: Download Web Info - C:\Program Files\Dataroute\Download.htm
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
O20 - Winlogon Notify: pmhkntju - pmhkntju.dll (file missing)
O20 - Winlogon Notify: xxywwwx - xxywwwx.dll (file missing)
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

End of file - 4420 bytes