http://www.ati.com/support/driver.html The 9100 is just an 8500 rebadged for a new naming scheme, so the 8500 drivers should work fine.
np. Btw, the fglrxconfig setup isn't all that great, it b0rked my graphics on Redhat, but if you enter the values manually after installing the rpm, it should work fine. My progress in this thread: http://forums.bit-tech.net/showthread.php?s=&threadid=26357