I’m trying to hook up a modem for my Xbox 360, but I’m getting confused. I hooked up the first part of the ethernet cable to the back of my Xbox 360, and I don’t know where to hook the other end up to? It says to hook it up to a DSL Modem but I don’t have one, is this something I have to buy in a store or something? There’s no electrical outlet that the ethernet cable fits into, I know what one looks like but there aren’t any around my Xbox. Any feedback?