There is an advertisement virus on my computer and i need help removing it?

I had that damned thing too. Came in from Facebook. Anyway I tried the anti-spyware programs and they would kill it for a day, next time I powered on it was back. I finally turned my computer on in the safe mode and went back to a restore point a week or so before I had got the bug and loaded from there. That cleared it finally. Stay away from questionable websites, little known sites are notorious for giving you stuff like this. Also be careful of the emails you open, particularly anything with an attachment. Be sure the person actually did send it to you. There are programs that will copy your address book and use it to send emails from you to your contacts containing trojans, and send more to you supposedly from your contacts.