most hi-def t.v.s have one d.v.i. input no problem I bought a Denon 2910 d.v.d. player with d.v.i. output and GIFFEN d.v.i. switcher which comes with d.v.i. cables now I can switch between my dish 811 hi-def converter and d.v.d. player and the picture is stunning Also I found out using componit vidio cables gave me a nasty picture good luck stewart norrie