I can get the AA and AF setttings to work with my 9800 Pro. It works fine until I try to watch a replay, then I get a Shadow Error. The shadows no longer show up in the replay or in the game. I have to exit the game and restart it to get the shadows back.

I only force the use of AA and AF with the graphics card in LFS because the other games I have let you set those options separate from the video card options.