Crash7, I had the same problem.
I believe this is what I did to correct it.
First you need to download and install Radlinker RC3 for Windows 2000/XP(RadClocker Included)
2nd, download and install RadClocker 1.501 for Windows 2000/XP because I think it has some updated stuff in there for Radeon 9800Pro that's not in the Radlinker RC3.
Give it a try, it worked for me and my 9800 Pro.