Comcast broadband Internet comes via the modem leased to you by the company. This setup permits you to use just one computer with the Comcast modem. To connect multiple computers to the Internet at your home, you must use a router device. The router directly connects to the modem and then delivers the signals to any number of computers. Linksys WRT54G is a popular router model that offers reliable connection and supports both cable and wireless (Wi-Fi) Internet. Writer Bio