Good file shredder for vista 64 bit

Hi Guys,

I've just installed Vista 64 bit on my new computer and am trying to sort out which programs work with it, and which don't.

At the moment I'm looking for a good and comprehensive file shredding / deleting application, either free or paid. I just want one that works well in Vista, and preferably is 64 bit. But if its 32 bit and works that might have to do.

Any ideas or suggestions?

thanks,

J