I have XP,but if I right click on the icon there is an option to change it,or you can try Change Icon 1.2.1
What about system restore?
Tom
Lately, all my icons have changed into this:
http://img373.imageshack.us/img373/7663/untitledgi4.jpg
I've used tweakUI's icon repair but it doesn't seem to work.
Thanks!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic