What input standards will the TV need?
A digital input will be needed. Some older sets have analogue input only but to avoid piracy it is likely that set-top boxes for HDTV will reduce resolution to standard definition for analogue connections to the HDTV. That is certainly not what you want to happen! DVI and HDMI are the digital standards in use. HDMI is the newer standard. It can take a higher bit-rate and includes audio. It has been called the digital scart. Sky have announced that their first batches of set-top boxes will permit HDTV to be run through component video cable so if you have an older HDTV you probably need to get one of the early set-top boxes.