Well, the best way to recover files is not to delete them
;-) Fairly simple, huh? But there is a problem. Many people are iritated by full Recycle Bin icon on their desktop and have to empty it 20 times a day. That is wrong! So I advice everybody to set Recycle Bin to something like 20% of their C: drive, next delete Recycle Bin icon
from their desktop, and forget about it.
When you need to recover files, go to My Computer and recover them from Recycle Bin ;-)
Or use this: http://www.oo-software.com/de/products/oounerase/