DSL - From your tele socket, you need a splitter, that you can poke 2 cables into: 1 for your phone, and one to go INTO THE ROUTER (this is an dsl cable).
The router (as the name suggests routes your internet traffic from differnet PC's at your site or home. via radio or network cable).
You may need to set your router up, details are supplied with your broadband package. You are given one IP (a number computer number to talk in the world of networks) address (for this reason you can generally only have one router). Your router then hands out its own IP addresses to your networked printers, pc's, cctv. also generally on a DHCP. (dynamic host - so your IP number can change if its nabbed by something else, or runs out). BADMAN