我的电脑中了个木马，叫win32.Troj.rootkit，中文名好像叫：内核木马。
我怎么杀也杀不了，杀毒软件更本没用，我用HiJackThis_v2在安全模式下扫描了，可我看不出有什么可疑的地方。我现在贴出，请个位大虾看下，帮我解决下。要如何杀了这该死的木马。谢谢了
日志文件: 趋势科技 HijackThis v2.0.0 (BETA)
保存时间: 3:27:55, on 2007-8-10
操作系统: Windows XP SP2 (WinNT 5.01.2600)
启动模式: 正常

正在运行的进程:
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:\KAV2007\KWatch.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\KAV2007\KPfwSvc.EXE
C:\WINDOWS\system32\nvsvc32.exe
C:\Program Files\Hewlett-Packard\Shared\hpqwmiex.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe
C:\Program Files\Yahoo!\Assistant\yAssistSe.exe
C:\KAV2007\KAVStart.exe
C:\WINDOWS\system32\ctfmon.exe
C:\KAV2007\KPFW32.EXE
C:\KAV2007\KMailMon.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\system32\NOTEPAD.EXE
C:\Program Files\Thunder Network\Thunder\Program\Thunder5.exe
C:\Documents and Settings\Administrator\桌面\HA_HijackThisv2_PP\HiJackThis_v2.exe

R3 - URLSearchHook: 雅虎助手 - {406F94F0-504F-4a40-8DFD-58B0666ABEBD} - C:\Program Files\Yahoo!\Assistant\Assist\yasbar.dll
F2 - REG:system.ini: UserInit=C:\WINDOWS\system32\Userinit.exe
O2 - BHO: yPhtb - {33BBE430-0E42-4f12-B075-8D21ACB10DCB} - C:\Program Files\Yahoo!\Assistant\Assist\yphtb.dll
O2 - BHO: Info cache - {385AB8C6-FB22-4D17-8834-064E2BA0A6F0} - C:\Documents and Settings\All Users\Application Data\Microsoft\PCTools\pctools.dll (file missing)
O2 - BHO: Anti Fish - {38928D50-8A48-44C2-945F-D2F23F771410} - C:\Program Files\Yahoo!\Assistant\Assist\yAngling.dll
O2 - BHO: YDragSearch - {62EED7C6-9F02-42f9-B634-98E2899E147B} - C:\PROGRA~1\Yahoo!\ASSIST~1\Assist\YDRAGS~1.DLL
O2 - BHO: AssistHelper - {FE3ECAE7-0A37-4506-8A7D-3CC9A04D2CA8} - C:\Program Files\Yahoo!\Assistant\Assist\yassist.dll
O3 - 工具栏: 雅虎助手 - {406F94F0-504F-4A40-8DFD-58B0666ABEBD} - C:\Program Files\Yahoo!\Assistant\Assist\yasbar.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [Cpqset] C:\Program Files\Hewlett-Packard\Default Settings\cpqset.exe
O4 - HKLM\..\Run: [SynTPEnh] C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
O4 - HKLM\..\Run: [NeroFilterCheck] C:\WINDOWS\system32\NeroCheck.exe
O4 - HKLM\..\Run: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [YLive.exe] C:\PROGRA~1\Yahoo!\ASSIST~1\YLive.exe
O4 - HKLM\..\Run: [yassistse] C:\Program Files\Yahoo!\Assistant\yAssistSe.exe
O4 - HKLM\..\Run: [KavStart] "C:\KAV2007\KAVStart.exe" -startup
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [KavPFW] "C:\KAV2007\KPFW32.EXE"
O4 - HKUS\S-1-5-19\..\Run: [ctfmon.exe] C:\WINDOWS\system32\CTFMON.EXE (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [ctfmon.exe] C:\WINDOWS\system32\CTFMON.EXE (User 'NETWORK SERVICE')
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')
O8 - 扩展右键菜单项: &使用迅雷下载 - C:\Program Files\Thunder Network\Thunder\Program\geturl.htm
O8 - 扩展右键菜单项: &使用迅雷下载全部链接 - C:\Program Files\Thunder Network\Thunder\Program\getallurl.htm
O8 - 扩展右键菜单项: 导出到 Microsoft Office Excel(&X) - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - 扩展右键菜单项: 添加到雅虎订阅(&Y) - res://C:\Program Files\Yahoo!\Assistant\Assist\yrss.dll/YRSSMENUEXT
O8 - 扩展右键菜单项: 雅虎搜索 - res://C:\Program Files\Yahoo!\Assistant\Assist\yasbar.dll/203
O22 - SharedTaskScheduler: Browseui 预加载程序 - {438755C2-A8BA-11D1-B96B-00A0C90312E1} - C:\WINDOWS\system32\browseui.dll
O22 - SharedTaskScheduler: 组件类别缓存程序 - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\WINDOWS\system32\browseui.dll
O23 - Service: AddFiltr - Hewlett-Packard Development Company, L.P. - C:\Program Files\Hewlett-Packard\HP Quick Launch Buttons\AddFiltr.exe
O23 - Service: hpqwmiex - Hewlett-Packard Development Company, L.P. - C:\Program Files\Hewlett-Packard\Shared\hpqwmiex.exe
O23 - Service: Kingsoft Personal Firewall Service (KPfwSvc) - Kingsoft Corporation - C:\KAV2007\KPfwSvc.EXE
O23 - Service: Kingsoft Antivirus KWatch Service (KWatchSvc) - Kingsoft Corporation - C:\KAV2007\KWatch.EXE
O23 - Service: NetMeeting Remote Desktop Sharing (mnmsrvc) - Unknown owner - C:\WINDOWS\system32\mnmsrvc.exe (file missing)
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe

[用户系统信息]Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)