can't change settings

[aaaamooaaaa]

When I try to change the resolution (I play at 1280x1240
), no problem. But if I try to change the antialiasing above 4x, it says it will apply it next time doom 3 is run. When I restart the game, no AA is on and my resolution goes to 800x600, WTF? Anyone know whats goin on? And where do I change the AF???

3.6 GHz
1 GB RAM
ATI X800 XT

[Verdale]

You turn on the AF on in your video card's setting. And obviously, Doom 3 is telling you that you cannot run Doom 3 at that high of a setting, don't ask why.

Try updating your drivers, and if that doesn't work, re-installating Doom 3.