Then you;ll need to connect to your router, set it up to connect via PPPoE, put in your username and password into the router (I usually set a idle-disconnect time of about 1~2 days), unplug the power from your DSL modem, plug the router inbetween the modem and the computer with proper connections, setup a new broadband connection in your network control panel to find the network via DHCP, turn your modem back on, and hope your ISP doesn't do MAC logging.
Heh... good luck!