Set up pfsense on a 2 g compact flash (with ide interface) and installed it in an old "AT" based p1 box. Need to compare the throughput compared to the plastic router being used now.
Bought a pogoplug for twenty bucks on the recommendation of SourceTrunk. Have not tried to install linux yet. Arch should be an interesting new distro to play with. It has a crappy warranty.
Do not have a machine that can run w8, but I have a client machine that could probably...