Here's what you have to do in order:
1. Download and install your kernel source rpm, if its mandrake 9.2 default should be 24.22.10.
install with: rpm -i --force <filename>
2. Download the latest ATI driver for your Xfree version
install with: rpm -i --force <filename>
3 go into /lib/modules/fglrx/build_mod and type ./make.sh
4 go back one dir to /lib/modules/fglrx and type ./make_install.sh
5 run fglrxinfo and setup your hardware accordingly
6 reboot and hope it works
I did this and got my 9700 pro working, well at least most of the time
Good luck