Upgrading the Video Card was my solution to finding the FS games too cartoon like to be any fun. I put an Nvidea 64mg Card in my old 533mhz HP, and the difference was mesmerizing!!!!
Also, I recommend using a "Force Feedback" joystick, play at night when you can get everything dark but the screen, and just for kicks, have a little desk fan going, so you can feel just the slightest hints of a breeze in your face. My Cousin went as far as placing a gauze pad with a little bit of hydraulic fluid on it, in a lid in front of his fan.... to enhance the smell.
But unless you're single, I wouldn't consider going this far!
Frank