Penumbra Overture don't launch

[acal3000]

I saw a bit the installed files and seems the insaller make them bad lots of the files had 0 bytes but I saw the installer left in a tar file i uncopressed them and ten I overwrited the 0 bytes files and now complained about ccannot start the sound system in KDE. It don't impress me since i updated to MDV 2008 I have had some sound problems with sound programs I tried Fluxbox ICEWM and this one seems wnat to launch but say my graphic driver don't support some features but How can i update the drivers from a Radeon 9250? If ATi dumped the support long ago and I don't want to mess with the last propietary one since it's ages old and i can't find another open source driver one for this card