kak worm (?) won't die

A friend's computer, Win98, displays a window titled kak.hta whenever it boots. I suggested he download a trial version of NOD32, update it and do a clean with it. Nothing found! So, I've cleared Run in the registry and attempted to stop it starting via msconfig. It returns without failing, having the gall to re-check the startup entry in msconfig. Can someone please point me to where I can find a solution?

 

It's strange.
Try to send the file to: samples@nod32.com for further analyzis.

 

Kak is a little beast--and can be difficult to remove.

I would visit this site:

http://securityresponse.symantec.com/avcenter/venc/data/wscript.kakworm.html

and read the instructions carefully, as this worm can write to your autoexec.bat files, among others.

Good luck.

 

Thanks for the help. I followed JimIT's guidance and slavishly followed the Symantec routine. It turned out that most of the infestation had gone; the only bit left was hidden in autoexec.bat and amounted only to displaying the wretched window.
@dvk01. I don't think it's worth a separate post; I had already run AdAware, Spybot and Spysweeper - they found nothing, probably because other than the line in autoexec.bat there was nothing to find. I have never tried hijackthis but I'm certainly now going to look at it.
Thanks everyone.