Everything is working fine, but I'm realizing that the 100Mbps max on the router is a bottleneck when moving big files around from the fixed PCs. If I want to upgrade to gigabit networking, can I just get a 1000Mbps switch, connect it to the existing router with an ethernet cable and run all the current wires from it to the existing PCs? Or is there more to it than that?
As another option, I could just get a draft N router with 1000Mbps LAN, which wouldn't be a huge amount more than just getting a switch, and I'd have one fewer pieces of equipment for my wife to sigh about.