sherdepunjab: I ended up replacing that 9800 Pro with an AGP 7800 GS. This card installed nicely and has been running fine. I downloaded the RC1 but haven't installed it. I just have too many projects and other things to worry about right now.
If I were you, I would go back to that other guys posting and send him a PM asking for the procedure to get the INF file installed. Maybe you need to do the normal install, and then go find the INF file and place it where it really belongs. I don't know the procedure, otherwise I would tell you.
Good luck. I'm keeping my 9800 Pro as a spare right now. I have about 8 machines running, so it's good to have a spare. Check out my site (in my signature) for pictures.