CSS Server Start ERROR!!!

[GPOPS-LINUX]

Followed How-To on this site. ERROR is...
./srcds_run: line 344: 2999 Illegal instruction $HL_CMD

checked script and this line is startup if conditions are met. Not sure what to do here.
Running older AMD T-Bird 800MHZ 1GB RAM and older NVIDIA GeForce video with LINUX driver installed.

Get this same error on FC6 or RHEL build w/2.6 kernels.

Is this a common error?

Please help.

GPOPS

[fqdn]

don't think that proc supports sse (which is required by srcds), do a "cat /proc/cpuinfo" and see the output.