Problems with ATI Radeon 9600 PRO on 2.4.21-15 kernel

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I am trying to configure the ATI Radeon 9600 PRO graphics card with a 
2.4.21-15 kernel and XFree86 4.3, but the display will not start. Any 
help would be appreciated.

TIA
Andrew

Details:
After installing RHEL3.0, I downloaded the fglrx-4.3.0-3.9.0.i386.rpm 
and ran through the rpm -Uh --force as suggested by ATI. This log looks 
clean - it did warn about the tainting of the kernel - but ATI expects 
this.

After running through the fglrxconfig - which with the exception of the 
monitor refresh rates - was default.

Then when running startx, I am getting the following error message

(WW) fglrx: No matching Device section for instance (BusID PCI:1:0:1) 
found
Could not init font path element /usr/X11R6/lib/X11/fonts/Speedo/, 
removing from list!
SESSION_MANAGER=local/ababb-lnx1:/tmp/.ICE-unix/4971
AUDIT: Sat Jul 17 18:46:36 2004: 4966 X: client 4 rejected from local 
host

What i am seeing is that the monitor temporarily flickers and then just 
goes blank.

Thanks again