"Tips, tricks, and how-to's
Instantly restore digital photos
Made a mistake editing your digital photos? Don't worry, Windows Vista Ultimate Edition has kept a copy. Every snap you import is automatically backed up, so if anything untoward happens you can quickly reset it to its original state, identical to when you first imported it.
1. Open Windows Photo Gallery and browse to the photo you want to restore.
2. Hold down CTRL and press R
3. Click "Revert" on the box that appears."
Just had this down from MS on an email,it mau explpain things a bit