I'll make a wild guess that you use BitTorrent or other file sharing applications. They're fantastic ways to get into someone's systems and hijack all their information. You'll have to do a wipe all the way down on the hard drive(s) and if you're lucky, they haven't hacked your BIOS yet. Best of luck!
Dragging knee is for the track, and dragging tail is for the lot. --Kane Friesen
When you're in a car, you're watching a movie; when you're on a bike, you're in the movie. --Robert Pirsig
Identity theft is not Fun