I was thinking about doing this as a small part of my Next Big Plan (notice the capitals). The Next Big Plan was to take a broken powerbook or imac (maybe one with a faulty analogue board), build it in to a rack-mount case and incorporate a hub. I was going to use the finished product as an NAT and file server. Needless to say this project is on the wish-list until I can find the right hardware. It might end up having to be x86 with Linux (gasp) unless someone has one of these machines broken in New Zealand.

I think the aim would be to plug the original computer's built in ethernet port in to one of the hub's ports, creating a machine with 7 Ethernet ports.