You need a router to be able to share the internet at home. Any SOHO router will work - small office/home office. Unplug power to the modem. Plug the routers wan port into the connection on the modem. Plug power into modem, let it initialize and then plug power into the router. Let router initialize and then either follow the instructions on the Routers setup cd or goto the configuration page. Should be either 192.168.0.1 or 192.168.1.1 for most routers.