As a Data Recovery Expert I find most freeware shredders are crap. The best one I have come across is Wipe Info in Norton Utilities 2002.

You should see how suprised my friends are at school when I recovery there passwords off their floppy's when they thought that they deleted them for good!

I've never used this virus before but it's called the Hard Drive Killer Pro. It claims to mutilate the hard drive physically. If you want to try it, give me an email ([email protected]). I forgot what website I got it from.