sounds like a nasty virus to me. but im only talkin from expiereance. unlike tant and bond i lack one key skill....... knowlage lol. (oh and spelling)
remember make sure you back up anything you dont want to loose before making big changes to your comp, onto a seperate hard drive compartmemt or on dvd/cd. virus' normaly attack the operating system files which if deleted could sotp windows working, totaly!
(i made made the mistake of not backing stuff up once before attacking a virus and i lost 2 years of photos, dont be a monkey like me )
have fun