So I have the disc copy of Fallout 3 and just bought the GOTY on steam. When I play the steam version the transparency on grass is all messed up. Only happens when I have AA turned on through the game.

No my screen but same problem http://screenshot.xfire.com/screenshot/natural/e18763afc2a2c21583997bc6e621bc58732ff6b4.png

I'm not sure why it would do it on the Steam version and not my disc one which. I have the setting on it maxed out completely.

Win 7 64
Nvidia GTX 550 ti

Would rather not have to do it through the Nvidia control panel if I don't have too.