I currently have an HD subscription form Comcast and have my main HDTV hooked up to the HD box which works perfect. However, I am looking at buying a Sumsung HDTV that has the HD tuner built into it for my bedroom. So my question is can I just split the main line coming into my house and hook the coax cable into my Samsung TV and recieve the Comcast HD channels or do I need to have another Comcast box for my bedroom?