Even if you can't find it for fc5 does not mean the fc4 or fc3 will not work. If there are others for fc3 or fc4 then download and try to install. I have centos 4.4+ and have installed older rpms some even from redhat 7 days. Check out dries and dags sites for possiable sites.
Distribution: RHEL 5.1 with Pieces of this and that.
Kernel 184.108.40.206, KDE 3.5.8 and KDE 4.0 beta, Plus Development src.rpm, ATI fglrx64_7_1_0-8.433-1 rpm with 3D and DRI working.
Acer 5100-5840 with webcam, ati, sdcard reader, sound, atheros based wireless, all working. Only thing not working is the memory stick reader.