Re: Crysis and AA?
Yup, what Seri said. You can download mods to make the game look/act differently. An autoexec.cfg will set preferences automatically no matter what you set in the games settings. But if you aren't familiar with it, then you don't have one.
AA works fine for me, but the highest I can go on an 8800GTS is 2X which doesn't make much difference.
Some of the ..I think 169 drivers...the AA was broken. Not sure what your issue may be.