Age of Mythology killed something... video problems!

OK, I'm having some kind of video problem here. Everything was working fine until I installed Microsoft Age of Mythology. It installed and played fine, but then when I tried to go and play GTAIII it wouldnt let me. It popped up an error message saying "Grand Theft Auto III requires at least 12MB of available video memory" ...WTF?

I have an Asus V7700 Ti with 32 megs of SGRAM, and I've never had anything like that happen. I figured maybe the new game put in some crazy version of DirectX or something so I lived with it for a few weeks till I finished it and uninstalled AoM yesterday. Still nothing. I even reinstalled GTA today and it says the same thing. I don't really want to reinstall my video drivers, but I might give it a try later on.

Does anyone have any ideas what this might be?? Please?