yeah, try in safe mode, or re-installing your operating system.

If its not letting you delete the file, i suggest getting Bulldog Scanner :) It tells you what programs are virus's and what programs are trying to connect to the internet from your computer. It also...

hmm...did you go to Add Hardware, in the control panel? That could help you out. If it still is messed up, and your computer isnt working, try doing system restore, while your old memory is...