While setting up a game room, my friend decided to buy a big screen. It was down to a Sony 60", and I said he should go for it. The clerk said since he was fixing to lay over $1000 on it, that he should just go for HDTV. So he called me, thinking I was knowledgable on such items. I informed him that it wasn't worth it-we weren't subscribed to High Definition television services, and I equated size with better. But when he got home, he unveiled a 53" HD Hitachi. After looking it over, I decided it was a pretty good budget big screen. My question is, we are completely HD newbies. Do I have to have an extra box to get HD programming? Are normal shows broadcast in HD? To hook up, say, an X-Box in hi-def, will I need anything other than the HD Pack? Also, I see numbers tossed around-480i, 480p, 1080-he said the clerk told him it was 1080. What exactly does this mean? Since I've got it hooked up in the unfurnished game room, which as of yet hasn't got cable, I've not seen a broadcast signal on it. But I did try out a PS2, Dreamcast, N64, and a DVD via the PS2, and I thought the image quality was pretty good, especially since I was sitting so close. I know this may seem stupid, but I'd never given HD much thought. Thanks for the time.