OK you've deleted a valuable file in error and it's not in the recycle bin.
Worse still, you can't recover it with a restore utility as it has been
overwritten. But all is not lost, in this article our Tips Editor Vic shows
you a way you may be be able to get your file back.
http://www.techsupportalert.com/content/use-these-tricks-recover-lost-files-windows-7.htm