我的XP机子,最近打开IE就进入http://www.666666666.com.cn/17633/,可在Internet属性中又为http://www.17633.com,而且变灰.注册表禁用.查毒没有,用ie修改器、卡卡上网安全助手、优化大师等修改注册表使Internet属性中地址栏中的网址正常,可是重启后,又变灰,注册表被锁。而且第二次用卡卡修改，尽然修改不了。不知是什么原因. 请教高手如何解决。多谢。

Logfile of HijackThis v1.99.1
Scan saved at 23:04, on 2006-8-24
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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\Ati2evxx.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\Ati2evxx.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\tp4serv.exe
C:\Program Files\Analog Devices\SoundMAX\SMax4PNP.exe
C:\WINDOWS\AGRSMMSG.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\PROGRA~1\SKYNET\FIREWALL\PFW.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe
C:\Program Files\Thunder Network\Thunder\Program\Thunder5.exe
E:\SOFT\net\MyIEGB\MyIE.exe
C:\Documents and Settings\Administrator\桌面\HijackThis V1[1].99.1汉化版\HijackThis.exe

O2 - BHO: MyIEHelper Class - {16B770A0-0E87-4278-B748-2460D64A8386} - C:\Documents and Settings\All Users\Application Data\Microsoft\IEHelper\IEHelper_4867.dll
O2 - BHO: ThunderBHO - {889D2FEB-5411-4565-8998-1DD2C5261283} - C:\Program Files\Thunder Network\Thunder\ComDlls\XunLeiBHO_002.dll
O3 - Toolbar: 卡卡上网安全助手 - {DB9ECD4F-FB8F-4311-B3CE-90B976C2707C} - C:\WINDOWS\system32\kakatool.dll
O4 - HKLM\..\Run: [TrackPointSrv] tp4serv.exe
O4 - HKLM\..\Run: [SoundMAXPnP] C:\Program Files\Analog Devices\SoundMAX\SMax4PNP.exe
O4 - HKLM\..\Run: [SoundMAX] C:\Program Files\Analog Devices\SoundMAX\Smax4.exe /tray
O4 - HKLM\..\Run: [ATIPTA] C:\Program Files\ATI Technologies\ATI Control Panel\atiptaxx.exe
O4 - HKLM\..\Run: [AGRSMMSG] AGRSMMSG.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe"  -osboot
O4 - HKLM\..\Run: [SKYNET Personal FireWall] C:\PROGRA~1\SKYNET\FIREWALL\PFW.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O6 - HKLM\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O7 - HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System, DisableRegedit=1
O8 - Extra context menu item: &使用迅雷下载 - C:\Program Files\Thunder Network\Thunder\Program\GetUrl.htm
O8 - Extra context menu item: &使用迅雷下载全部链接 - C:\Program Files\Thunder Network\Thunder\Program\GetAllUrl.htm
O9 - Extra button: 启动迅雷 - {0062C9BD-B349-40DE-91A0-755F37ACD559} - C:\Program Files\Thunder Network\Thunder\Thunder.exe
O9 - Extra 'Tools' menuitem: 启动迅雷 - {0062C9BD-B349-40DE-91A0-755F37ACD559} - C:\Program Files\Thunder Network\Thunder\Thunder.exe
O20 - AppInit_DLLs: C:\WINDOWS\system32\msdll32.dll
O23 - Service: Ati HotKey Poller - ATI Technologies Inc. - C:\WINDOWS\system32\Ati2evxx.exe
O23 - Service: SoundMAX Agent Service (SoundMAX Agent Service (default)) - Analog Devices, Inc. - C:\Program Files\Analog Devices\SoundMAX\SMAgent.exe


请帮忙看看！

是explore.exe在修改注册表。如何解决啊？

这是木马还是病毒啊？希望研究下，加入卡卡中，为后来者不再有此烦恼。