In the registry in windows 7 you can find old exe files that has been deleted from the desktop.
It's a bit long way to find it...
Hkey current user -> Software -> Microsoft -> Windows NT -> Currentversion -> AppCombatFlags -> Compatibility Assistant -> Persisted
The same are in...
HKey users -> S-1-5-21-and a very long number -> Software -> Microsoft -> Windows NT -> CurrentVersion -> AppCombatFlags -> Compatibility Assistant -> Persisted