I have a new roommate moving in and he has a pretty large media library on his PC. We are wanting to share the media library between our two computers. Right now I have a standard 100 megabit wireless router. If we want a gigabit connection to send files between the computers do I need to buy a gigabit router or can I buy a gigabit switch and connect the two computers to that? I guess I'm worried that the computers will be limitted to 100 megabit speed because the router is 100 megabit.