I downloaded the recent drivers for Nvidia and if im not mistaken, AA should be working now, but it doesn't. Anyone having this same problem?

Set it to "Enhance the Application Setting" in the Nvidia Control Panel, and in the NV launcher options set AA to the lowest settings. That's what works for me.

Good it's not just me. You can't override AA in this game for whatever reason nor does D3DOverrider work. I second what somegoofyidiot says though, if you select enhance it will work with whatever you set as long as you set a level off AA in-game