This may have been asked before and if so please direct me accordingly. I have just purchased a new Imac 24" 3.06 Ghz and would like to network it to my PC however there is only one ethernet outlet on the Mac so how can I run a network cable to my PC and connect my Mac to the net at the same time with only one ethernet outlet? Use firewire, ethernet switch, multiport modem or a combination of any of these? My PC and external HD are also firewire 400 where as the IMAC is firewire 800 so clearly I also need to use an adapter cable for firewire transfer. :?