I will be building a multimedia server with a 1TB Raid 5 array. It will be streaming content to two to three computers at the most at any given time. I am in the middle of gathering hardware, and now i must decide if I should go buy a mobo with onboard gigabit lan, or is it ok to use an older mobo and just install a PCI gigabit card. I realize that the speed will probably be slower because of the PCI bottleneck, but by how much? Anyone have any experiences or numbers to share? Much thanks for any help.