I've heard that changing your 3D card settings will make FS look a lot better than changing the game's settings. I got my "new" rig today (with a Nvidia GeForce FX 5200, running DX9 and with the latest drivers) and decided to try it.
I put AA and AF to 8x (the highest it would go) and loaded up FS. What I got was the most atrocious-looking graphics I've ever seen, and with an FPS that'd make slideshows look speedy. I then set the AA/AF to "Application-controlled" and modified the settings in-game. This gave me slightly better graphics (yet still not very pretty), with a somewhat less lousy FPS. I'm not exactly a computer expert, so I'm not sure what I did wrong.
Am I being an idiot and forgetting a step, or am I just gonna have to get used to crappy graphics?
EDIT: never mind, I'll get used to the graphics.