If you recieve a cable broadband internet connection, on that same line is broadcast your basic cable signal. In order to recieve it and your internet just install a splitter before your modem. Attach one side to your TV(s) and one to the cable modem. Then you get your basic cable thats being broadcast anyways and the broadband connection you pay an arm and a leg all in one.
Note: this does not work for digital cable(at least I havent tested it) or for HBO, showtime, etc..maybe with a converter box(havent tested that either)