瑞星扫描发现JS.DL.IstBar.g病毒,却无法清除,用hijackthis扫描的结果如下:请大虾指教

HijackThis@Qoo的扫描日志  V1.97.7
Scan saved at 22:26:58, on 2005-10-2
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
D:\WINDOWS\System32\smss.exe
D:\WINDOWS\system32\winlogon.exe
D:\WINDOWS\system32\services.exe
D:\WINDOWS\system32\lsass.exe
D:\WINDOWS\system32\svchost.exe
D:\WINDOWS\System32\svchost.exe
D:\PROGRAM FILES\RISING\RAV\Ravmond.exe
D:\PROGRAM FILES\RISING\RAV\RavStub.exe
D:\WINDOWS\Explorer.EXE
D:\WINDOWS\system32\spoolsv.exe
D:\PROGRA~1\RISING\RAV\RAVTIMER.EXE
D:\PROGRA~1\RISING\RAV\RAVMON.EXE
D:\WINDOWS\SOUNDMAN.EXE
D:\Program Files\Common Files\Real\Update_OB\realsched.exe
D:\WINDOWS\system32\rundll32.exe
D:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe
D:\PROGRA~1\Yahoo!\Assistant\yassistse.exe
D:\WINDOWS\system32\ctfmon.exe
D:\Program Files\Messenger\msmsgs.exe
D:\Program Files\Common Files\EPSON\EBAPI\SAgent2.exe
D:\PROGRAM FILES\RISING\RAV\CCENTER.EXE
D:\Program Files\Internet Explorer\iexplore.exe
F:\9\QQ.exe
F:\9\TIMPlatform.exe
D:\Program Files\Internet Explorer\iexplore.exe
F:\Program Files\Thunder Network\Thunder\Thunder.exe
e:\Program Files\WinRAR\WinRAR.exe
F:\hijackthis1.97_qoo\HijackThis.exe

R3 - URLSearchHook: (no name) - {BB936323-19FA-4521-BA29-ECA6A121BC78} - (no file)
R3 - URLSearchHook:
O2 - BHO:
O2 - BHO: QQIEHelper - {54EBD53A-9BC1-480B-966A-843A333CA162} - F:\9\QQIEHelper.dll
O2 - BHO: YDragSearch - {62EED7C6-9F02-42f9-B634-98E2899E147B} - D:\PROGRA~1\Yahoo!\ASSIST~1\Assist\ydragsearch.dll
O2 - BHO: IE - {D157330A-9EF3-49F8-9A67-4141AC41ADD4} - D:\WINDOWS\downlo~1\CnsHook.dll
O3 - Toolbar: ????? - {406F94F0-504F-4a40-8DFD-58B0666ABEBD} - D:\PROGRA~1\Yahoo!\ASSIST~1\Assist\yasbar.dll
O4 - HKLM\..\Run: [IMJPMIG8.1] "D:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [PHIME2002ASync] D:\WINDOWS\System32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] D:\WINDOWS\System32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [RavTimer] D:\PROGRA~1\RISING\RAV\RAVTIMER.EXE
O4 - HKLM\..\Run: [RavMon] D:\PROGRA~1\RISING\RAV\RAVMON.EXE -SYSTEM
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [IMSCMig] D:\PROGRA~1\COMMON~1\MICROS~1\IME\IMSC40A\IMSCMIG.EXE /Preload
O4 - HKLM\..\Run: [TkBellExe] "D:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [helper.dll] D:\WINDOWS\system32\rundll32.exe D:\PROGRA~1\3721\helper.dll,Rundll32
O4 - HKLM\..\Run: [CnsMin] Rundll32.exe D:\WINDOWS\downlo~1\CnsMin.dll,Rundll32
O4 - HKLM\..\Run: [YLive.exe] D:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe
O4 - HKLM\..\Run: [yassistse] "D:\PROGRA~1\Yahoo!\Assistant\yassistse.exe"
O4 - HKCU\..\Run: [ctfmon.exe] D:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MSMSGS] "D:\Program Files\Messenger\msmsgs.exe" /background
O4 - Global Startup: ntuser.dat
O4 - Global Startup: ntuser.dat.LOG
O8 - Extra context menu item: &使用迅雷下载 - F:\Program Files\Thunder Network\Thunder\geturl.htm
O8 - Extra context menu item: &使用迅雷下载全部链接 - F:\Program Files\Thunder Network\Thunder\getAllurl.htm
O8 - Extra context menu item: 上传到QQ网络硬盘 - F:\9\AddToNetDisk.htm
O8 - Extra context menu item: 导出到 Microsoft Office Excel(&X) - res://E:\PROGRA~1\MICROS~1\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: 添加到QQ自定义面板 - F:\9\AddPanel.htm
O8 - Extra context menu item: 添加到QQ表情 - F:\9\AddEmotion.htm
O8 - Extra context menu item: 用QQ彩信发送该图片 - F:\9\SendMMS.htm
O11 - Options group: [!CNS] 
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1124467088984
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab
O17 - HKLM\System\CCS\Services\Tcpip\..\{FFAF5F24-B4E4-4C51-AA02-A9B402907284}: NameServer = 202.99.160.68 202.99.166.4