Help! virus rdiv.sys

j'arrive pas à me debarrasser de rdriv.sys que avg me signale sans cesse.
si quelqu'un peut m'aider.
voici mon rapport hijackthis :

Logfile of HijackThis v1.99.1
Scan saved at 16:05:48, on 06/10/2005
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\Explorer.EXE
F:\logiciels\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer,SearchURL = http://www.the818search-co.com/sp2.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://www.the818search-co.com/sp2.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://www.the818search-co.com/sp2.php
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Window Title = NUMERICABLE
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O4 - HKLM\..\Run: [S3Hotkey] s3hotkey.exe
O4 - HKLM\..\Run: [S3TRAY2] S3Tray2.exe
O4 - HKLM\..\Run: [CloneCDTray] "C:\Program Files\SlySoft\CloneCD\CloneCDTray.exe" /s
O4 - HKLM\..\Run: [VirtualCloneDrive] "C:\Program Files\Elaborate Bytes\VirtualCloneDrive\VCDDaemon.exe" /s
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [EasyPHP] "C:\Program Files\EasyPHP1-8\EasyPHP.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_04\bin\jusched.exe
O4 - HKLM\..\Run: [Windows Login] winIogin.exe
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [AVG7_EMC] C:\PROGRA~1\Grisoft\AVGFRE~1\avgemc.exe
O4 - HKLM\..\RunServices: [MS Security] systm.pif
O4 - HKLM\..\RunServices: [Windows Login] winIogin.exe
O4 - HKCU\..\Run: [RamBoostXp] "C:\Program Files\RamBoost XP\rambxpfr.exe"
O4 - HKCU\..\RunServices: [MS Security] systm.pif
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: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_04\bin\npjpi150_04.dll
O23 - Service: Apache - Unknown owner - C:\PROGRA~1\EASYPH~2\Apache\apache.exe" --ntservice (file missing)
O23 - Service: Autodesk Licensing Service - Unknown owner - C:\Program Files\Common Files\Autodesk Shared\Service\AdskScSrv.exe
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVGFRE~1\avgupsvc.exe
O23 - Service: MySQL - Unknown owner - C:\PROGRA~1\EASYPH~2\MySql\bin\mysqld.exe
O23 - Service: TabletService - Wacom Technology, Corp. - C:\WINDOWS\System32\Tablet.exe
O23 - Service: TASKESV (TESV) - Unknown owner - C:\WINDOWS\taskcntr.exe
O23 - Service: Windows 32 Bit (Windows 32 Bit Drivers) - Unknown owner - C:\WINDOWS\WinVid32.exe
O23 - Service: Windows Time Sync (wservtime) - Unknown owner - C:\WINDOWS\csrss.exe