AT&T's DSL tech support only made it worse by having my mother delete her PPPoE (Point-to-Point over Ethernet) client setting in Windows Vista and transferred the PPPoE client to the modem itself.

I'm going to get DSL soon and only have one computer, but I plan on adding one or two sometime soon. The setup looks like it'll be 3 machines in one room. I want to set them up where I can get on ...