Daniel, Did you use the 'glxinfo' command in an xterminal under FC2 to check if 'direct rendering: Yes' is reported. Assuming you have your board in an AGP slot and used the System Settings-> Display control panel to enable the radeon driver, the resulting xorg.conf should be preconfigured to enable DRI. If you are interested in using the ATI closed source fglrx driver instead I posted a set of instructions for FC2 at...
http://www.redhat.com/archives/fedora-list/2004-June/msg01514.html Jack