This isn't Mac-related, but a lot of people here are very knowledgeable in non-Mac stuff so I'll ask anyway My DSL router has an option to be used as a level 2 bridge. What does this mean? My guess is that it makes it function like a regular modem, and it wouldn't perform any routing or NAT functions, and would therefore have to be plugged into a single system and not into a hub. Is my guess right? The reason I'm asking, is because I have a lot of trouble using things like MSN Messenger's file sharing. I have to open pinholes in the router and it's frustrating, especially when I try out new apps and have to reconfigure everything. So I'm wondering whether using it as a bridge would solve this problem. For the sake of simplicity, assume that I only have one computer. I'll worry about the others later. Edit: The DSL router is a now-discontinued Dynalink RTA020 with the latest firmware.