hi! 2 Mach Speed K8M8MS motherboards eth0 ---use the onboard LAN port eth1 ---pci nic card using crossover to another box eth0....that is just a regular lan...the whole domain...internet etc eth1...just a private lan between 2 servers. for about a year I have been running this on 32 bit boards w/no problems but w/these 64 bit boards, they just don't want to hear about it when I hit the nic card, there is no response, when the nic card tries to hit, it give a "Wrong data bite #30" error whew!!! never ran into this before thx John Rose