我的注册表里有这么一项，怎么删都删不了。
advapi32 RUNDLL32 C:\WINNT\Downlo~1\_IS_ISC.DLL,isc
的病的时候就是这样：
advapi32 RUNDLL32 C:\WINNT\Downlo~1\_IS_ISC.DLL,isc
我上网前将任务管理器的RUNDLL32.exe强行关毕
用windows木马清道夫是查在这个位置
C:\WINNT\Downloaded Program Files\_IS_IDrv.exe---------------这个目录下找不到这些文件！！
C:\WINNT\Downloaded Program Files\_IS_KWRD.ini
C:\WINNT\Downloaded Program Files\_IS_BSYS.ini
C:\WINNT\Downloaded Program Files\_IS_7ZD.DLL
C:\WINNT\Downloaded Program Files\_IS_BSYS.DLL
C:\WINNT\Downloaded Program Files\_IS_IEBR.dll
C:\WINNT\Downloaded Program Files\_IS_ISC.DLL
C:\WINNT\Downloaded Program Files\_IS_LNBK.dll
C:\WINNT\Downloaded Program Files\_IS_LOIE.dll
C:\WINNT\Downloaded Program Files\_IS_MABR.dll
C:\WINNT\Downloaded Program Files\_IS_UPD.DLL
C:\WINNT\Downloaded Program Files\_IS_WEBH.dll
C:\WINNT\Downloaded Program Files\_IS_BAR.ini
C:\WINNT\Downloaded Program Files\_IS_BHO.ini
C:\WINNT\Downloaded Program Files\_IS_Site.ini
C:\WINNT\Downloaded Program Files\_IS_ml.dat
C:\WINNT\Downloaded Program Files\_IS_KWRD.ini.cpz
C:\WINNT\Downloaded Program Files\_IS_BSYS.ini.cpz
C:\WINNT\BACKUP\_IS_UPD.dll---我用启动光盘进纯DOS用del命令删除这些文件，重起后又还原！！
C:\WINNT\BACKUP\_IS_BSYS.DLL
C:\WINNT\BACKUP\_IS_LOIE.dll
C:\WINNT\BACKUP\_IS_LNBK.dll
C:\WINNT\BACKUP\_IS_MABR.DLL
C:\WINNT\BACKUP\_IS_IEBR.DLL
C:\WINNT\BACKUP\_IS_WEBH.DLL
C:\WINNT\BACKUP\_IS_7ZD.DLL
C:\WINNT\BACKUP\_IS_IDrv.exe
C:\WINNT\BACKUP\_IS_Site.ini
C:\WINNT\BACKUP\_IS_BAR.ini
C:\WINNT\BACKUP\_IS_BHO.INI
C:\WINNT\BACKUP\_IS_KWRD.ini
这些文件长期驻留内存。随系统启动！！
它的文件夹删了。可是过了一段时间注册表又出现了
advapi32 RUNDLL32 C:\WINNT\Downlo~1\_IS_0518\_IS_ISC.DLL,isc
不过没有发病。这是怎么回事啊！会不会又要发了啊！请高手帮忙看看啊。
郁闷！！！！！！！！！！
