I just purchased a Motorola DCT 2244 cable box off ebay. I have basic analog cable currently at my house. I want to subscibe to digital cable and the plan was to use the new box and have the Comcast tech set it up. When I called a Comcast salesperson she was not aware that this could be done and that I would have to use their box. This box is compatible with the service in my area and I am just trying to save on the box rental fees. Is she giving me a line? She says they only allow you to use your own modem for broadband. Thanks for any help.