No idea pal, but what programmes are you running to try n kill it?

I run AVG (anti virus), along with Spy Bot (spyware) and Ad-Aware (Spyware/adware) so if you haven't used any of these, give em a try - they are all free and easily found via Google.

Lastly - do oyu know when this happend? If you can pin point a date, you could try doing a system restore to the day before it infected your machine, which might kill it off