I have a virus on my computer!

it's a really risky way to do but be REALLY CAREFUL not to delete anything else but the file you're looking for.

1) Click 'Start' in Windows
2) Click 'Run'
3) Type in 'regedit'
4) Click 'Edit', Click 'Find'
5) Type in the file you are looking for, which will result in your computer doing a search in the registry for the file, and when found, select the file and delete. Run 'regedit' again to make sure the file no longer is on your computer.

Download the free version of Ad Aware. It's not an anti virus, but sometimes spyware programs look the same as viruses.