I have to set up a small peer-to-peer network with six PCs for a three month project and all I really need the PCs to do is share a DSL connection. What device would would I need that could to act as a DHCP server, do NAT translations, and provide some rudimentary firewall protection for more than four PCs? (Most broadband routers have only a four port switch built in). I don't want to do wi-fi. I guess I could plug a hub into a broadband router?