The package you need (
ati-8.34.8-2.1plf2007.1.i586.rpm) is in the plf non-free repository.
If you have not done so, you can add this repository to your set of urpmi media sources by following the directions at
Easy URPMI. Set up both the plf free and the plf non-free sources. You can also set up main, main updates, config, and config updates from the Open Source (official) list of media sources if you wish to have the full range of software packaged for use with Mandriva Linux available for installation using urpmi or the Mandriva Software Installer.
If Linux starts into a GUI, switch to a console screen (
CTRL+ALT+F2-6) and log in as root. Execute:
to shut down Xorg. If the GUI does not start, simply log in as root at the log in prompt. Execute:
You should use this tool to configure your graphics card. When asked if you want to use the available proprietary driver, answer
yes. The correct packages will be installed automatically.
HTH,