ATI 9100+LINUX?????

I recently bought a sapphire radeon 9100 64MB and despite the fact that it uses R200 as 8500 and 8500LE i cant make it work under linux nor by using ATI linux drivers nor by using gatos ati.2. The only way to work is using vesa generic drivers but the system is very slow. PLEASE help
Thanks in advance

i give the output of trying to install fglrx in my box:
after rpm -i --force the rpm , i cd to /lib/modules/fglrx/built_mod and execute the make script that exists there. After creating the module i cd to /lib/modules/fglrx and get the following message:

[root@localhost fglrx]# pwd
/lib/modules/fglrx



[root@localhost fglrx]# ./make_install.sh
- creating symlink
- recreating module dependency list
- trying a sample load of the kernel module
Warning: loading /lib/modules/2.4.18-14/kernel/drivers/char/drm/fglrx.o will taint the kernel: non-GPL license - Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY
See http://www.tux.org/lkml/#export-tainted for information about tainted modules
/lib/modules/2.4.18-14/kernel/drivers/char/drm/fglrx.o: init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters.
You may find more information in syslog or the output from dmesg
/lib/modules/2.4.18-14/kernel/drivers/char/drm/fglrx.o: insmod /lib/modules/2.4.18-14/kernel/drivers/char/drm/fglrx.o failed
/lib/modules/2.4.18-14/kernel/drivers/char/drm/fglrx.o: insmod fglrx failed
failed.


thank God for ATHLON