上sohu，google都ok，但是上163或者点击google搜索出来的地址，就会进入http://30686.com/，www.mh8888.com，www.988hk.com，http://www.988hk.com/index3.htm，这些都是六合彩页面。
下面是扫描的日志，请高手出招

Logfile of HijackThis v1.99.1
Scan saved at 9:21:13, on 2005-11-11
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\VeriSign\NAVI\naviagent.exe
C:\WINNT\system32\regsvc.exe
C:\WINNT\system32\MSTask.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\Explorer.EXE
C:\WINNT\system32\igfxtray.exe
C:\WINNT\system32\hkcmd.exe
C:\WINNT\SOUNDMAN.EXE
C:\PROGRA~1\SKYNET\FIREWALL\pfw.exe
C:\WINNT\system32\internat.exe
C:\WINNT\system32\Rundll32.exe
G:\工具\ha_hijackthis_1991\HijackThis.exe

R3 - URLSearchHook: i-Nav IDN SearchHook - {CE000994-A58C-4441-8938-744CD72AB27F} - C:\Program Files\VeriSign\i-Nav\i-nav_4_2_1.dll
O2 - BHO: Yahoo!Photo - {33BBE430-0E42-4f12-B075-8D21ACB10DCB} - C:\PROGRA~1\Yahoo!\ASSIST~1\assist\yphtb.dll (file missing)
O2 - BHO: GetURL Class - {74E6FD24-0206-4E47-997D-BA6B88C8489D} - C:\WINNT\system32\CatchURL.dll
O2 - BHO: i-Nav IDN Resolver - {CE000992-A58C-4441-8938-744CD72AB27F} - C:\Program Files\VeriSign\i-Nav\i-nav_4_2_1.dll
O2 - BHO: IEHlprObj Class - {CE7C3CF0-4B15-11D1-ABED-709549C10000} - C:\WINNT\system32\qylhelper.dll
O2 - BHO: bho Class - {ED8DFC5C-10EF-45AB-9DC2-0639AFF5A270} - C:\PROGRA~1\COMMON~1\Wnwb\wnwbio.dll
O2 - BHO: IEHlprObj Class - {EE7C3CF0-4B15-11D1-ABED-709549C10000} - C:\PROGRA~1\INTERN~1\HMAPI.dll
O3 - Toolbar: @msdxmLC.dll,-1@2052,电台(&R) - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINNT\system32\msdxm.ocx
O4 - HKLM\..\Run: [Synchronization Manager] mobsync.exe /logon
O4 - HKLM\..\Run: [IgfxTray] C:\WINNT\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINNT\system32\hkcmd.exe
O4 - HKLM\..\Run: [SoundMan] SOUNDMAN.EXE
O4 - HKLM\..\Run: [KAVPersonal50] "C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal\kav.exe" /minimize
O4 - HKLM\..\Run: [ClientQyule] C:\Program Files\Qyule\Qyule.exe
O4 - HKLM\..\Run: [SKYNET Personal FireWall] C:\PROGRA~1\SKYNET\FIREWALL\pfw.exe
O4 - HKLM\..\Run: [yassistse] "C:\PROGRA~1\Yahoo!\Assistant\yassistse.exe"
O4 - HKLM\..\Run: [resetIE] "C:\PROGRA~1\5xsoft\RESETIE\resetIE.exe" /auto
O4 - HKCU\..\Run: [Internat.exe] internat.exe
O4 - HKCU\..\Run: [ClientQyule] C:\Program Files\Qyule\Qyule.exe
O4 - HKCU\..\Run: [kubao] C:\Program Files\kubao\kubao.exe -autorun
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O8 - Extra context menu item: 发送图片到手机 - C:\Program Files\P4P\cx.htm
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINNT\web\related.htm
O9 - Extra button: (no name) - {CE000996-A58C-4441-8938-744CD72AB27F} - C:\Program Files\VeriSign\i-Nav\i-nav_4_2_1.dll
O9 - Extra 'Tools' menuitem: i-Nav 选项 - {CE000996-A58C-4441-8938-744CD72AB27F} - C:\Program Files\VeriSign\i-Nav\i-nav_4_2_1.dll
O17 - HKLM\System\CCS\Services\Tcpip\..\{79C0F546-1A0C-4C98-B3CB-D872D9132A42}: NameServer = 218.108.248.200,218.108.248.228
O20 - AppInit_DLLs: C:\WINNT\system32\SoDAHK.DLL
O20 - Winlogon Notify: igfxcui - C:\WINNT\SYSTEM32\igfxsrvc.dll
O23 - Service: Logical Disk Manager Administrative Service (dmadmin) - VERITAS Software Corp. - C:\WINNT\System32\dmadmin.exe
O23 - Service: kavsvc - Kaspersky Lab - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus Personal\kavsvc.exe
O23 - Service: VeriSign Updater (navi) - VeriSign, Inc. - C:\Program Files\VeriSign\NAVI\naviagent.exe
O23 - Service: Windows Explorer Helper (Winehplr) - Unknown owner - C:\Program Files\Common Files\System\WinRdg32.exe (file missing)

重新启动到安全模式（进入安全模式的方法:重新启动电脑, 开机自动检测完后, 按[F8]键(可以一直按到启动菜单出来为止), 选择安全模式(Safe Mode)进入Windows。）

开始→控制面板→性能和维护→管理工具→服务→查找Windows Explorer Helper→右击→属性→启动类型→禁止→应用→停止→确定。

请关闭所有IE界面，重新使用HijackThis扫描一次，选中下面建议修复的项目，让HijackThis修复，修复前请允许HijackThis保留备份。（如果楼主知道是安全的可以不必勾选）
O2 - BHO: GetURL Class - {74E6FD24-0206-4E47-997D-BA6B88C8489D} - C:\WINNT\system32\CatchURL.dll
O2 - BHO: IEHlprObj Class - {CE7C3CF0-4B15-11D1-ABED-709549C10000} - C:\WINNT\system32\qylhelper.dll
O2 - BHO: IEHlprObj Class - {EE7C3CF0-4B15-11D1-ABED-709549C10000} - C:\PROGRA~1\INTERN~1\HMAPI.dll
O4 - HKLM\..\Run: [ClientQyule] C:\Program Files\Qyule\Qyule.exe
O4 - HKCU\..\Run: [ClientQyule] C:\Program Files\Qyule\Qyule.exe
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
O20 - AppInit_DLLs: C:\WINNT\system32\SoDAHK.DLL

然后打开我的电脑→再点工具→打开文件夹选项→查看→把隐藏受保护的系统文件（推荐）和隐藏已知文件类型的扩展名的勾去掉→再显示所有文件→找到以下文件并删除：(如果有的话)
C:\WINNT\system32\CatchURL.dll
C:\WINNT\system32\qylhelper.dll
C:\PROGRA~1\INTERN~1\HMAPI.dll
C:\WINNT\system32\SoDAHK.DLL
C:\Program Files\Common Files\System\WinRdg32.exe
删除文件夹C:\Program Files\Qyule

非常谢谢楼上的，已经解决了。谢谢，谢谢。。。。