My friend suggested that once I've deleted my wallet to use the drive wiper feature in cc cleaner and set it to 3 passes, that should do it, do you agree?
Yep, I agree. CC cleaner also is a good tool.
ummmm...ok, so I'd have to load it up on another computer, confirm that my bitcoins are there, then destroy the .dat file on my computer (whilre preserving the one on my usb key obviously.) Is there another way to confirm it's not corrupt? I'd rather not have to load it onto another computer...