I currently live in the western new york area and i currently have the basic cable - no box - i have an sdtv right now - considering buying a box for my system - not sure if all boxes work in all areas - i may be moving to the rochester area later in the year - i'm not sure if any box will work in any area...will the box work to access the service i have now, or do i need to subscribe to more services? any help would be appreciated...