For the cable modem part, follow the instructions shown here or on the aforementioned web pages. The DHCP should work in the same manner. Cable Internet access availability is spreading to more areas each day. Cable modem packages generally include a modem lease or purchase fee along with a service fee. Leases usually cost between 15 and 20 dollars, and service can cost from 35 to 70 dollars a month, depending on location.
Speed varies from service to service.
However, services such as GTE charge twice as much and have speeds that compete only with double ISDN, which operates at a transmission speed of 128 kilobits per second, which is roughly 15 to 16 kilobytes per second. It all depends on your provider. There isn't an average price, since the whole technology is in its early stages. You can expect to pay anywhere from cable modem prices to several hundred dollars a month to get this service. However, the speeds of the service are phenomenal for the transmission medium.