A:AnswerThis model of TV is capable of displaying a 1080 HD signal. This means the TV can display an HD signal if it receives one. Whether or not you need a box to get HD is going to depend on how your provider chooses to do HD.
A:AnswerYou can use a variety of different cables. Can use a HDTV cable, can use cable direct from cable box or can use the 3 color plug in cables. HDTV cable would give you the best picture, in my opinion.