Sounds like you got a RAT my friend. Reformat should work fine, but you'll have to wipe everything... Meaning you'll loose everything on your current PC. Saying that because someone I know has infected people with RAT's etc, and it infects every single file on the computer.
Yeah, i'd rather not have to download films and games in 5 million parts And with my crappy connection which cuts off every so often, direct downloads are a no
Lols All downloaded over like a day or two http://i42.tinypic.com/5lowhy.jpg Only reason it took so long was because it would only download 5 at a time :/