When I setup my fa311 under rh 7, there was much confusion about pci/irq's etc. I was moving the cards around, and somehow the system thought there were three nic's and one was a modem! Some PCI cards if kept powered on, remember their settings, thus the need to use a dos utility. I simply unplugged the machine for a bit, then ran windows 98 (I could see no other way out!) which setup the cards, so when I rebooted into red hat, they all magically worked. I'm not sure if it was windoze or just physically putting the cards in a different slot that fixed it.