Great screenshot I took, but the lack of antialiasing is very noticeable:
http://img217.imageshack.us/img217/4194/screenshot2012031022515.jpg. Another screenshot showing lack of antialiasing:
http://img521.imageshack.us/img521/8082/screenshot2012030823184.jpg.
I have a GTX 570, I'm using the latest Nvidia beta drivers (for Skyrim purposes), and I've tried various antialiasing settings both ingame and overriding with Nvidia settings. Nothing improves the antialiasing and I don't know why, other than to think it's the game that's the problem, not my GPU or drivers or settings.
I can get Skyrim and Battlefield 3 to look fantastic (sample Skyrim screenshot to see what I mean:
http://img408.imageshack.us/img408/1846/2011121400004.jpg), and in STO I can't even get antialiasing to work

In fact changing the settings ingame, while leaving it application-controlled in Nvidia settings, doesn't do a thing. There's zero difference between None and 8x.
Comments
http://mrhaandi.blogspot.com/p/injectsmaa.html
When I change antialiasing options ingame, the screen doesn't even do anything. There's no flicker, there's no quick screen pause as it applies settings, there's no message about settings taking place when you next start the game, nothing, not to mention no effect on the graphics. It's literally like I'm clicking inactive buttons.
I'm also not a fan of FXAA. I tried it and it does something to the colors and clarity of the graphics I don't like. My computer is powerful enough to run Skyrim on ultra settings with beta ambient occlusion enabled, so I don't really need it. It also runs Battlefield 3 on max settings, even better than Skyrim since Skyrim is definitely not optimized for the PC.
Cant hurt to try it. Again it doesnt change colors, just adds AA.