Modify /etc/sysconfig/network-scripts/ifcfg-ethX and remove the HWADDR line if you have one, and add a MACADDR with the mac address you want to use.
Beware, some network cards may protest having the mac address changed, and using both HWADDR and MACADDR can cause issues. See /usr/share/doc/initscripts-*/sysconfig.txt for details.
Jim, I appreciate the confirmation, that was the method I was going to use. I am only unsure about what *could* happen with the HWADDR in there, can eth{n} now maybe bind to a different nic under some circumstance?
How can I always force the nic in question to use this script?
Thank you! jlc