your card says you have a radeon... so thats what im gonna work with here.
assuming you have the latest drivers and control panel (thats important, you can get them at
ati.com or
Rage3D), go to display properties -> settings tab -> advanced. there should be two tabs for OpenGL and Direct3D. in each of those tabs, ATI's version of anti-aliasing is called SMOOTHVISION, and the anistropic filtering is called just that. there should be a checkbox and slider for each of those options in both tabs.