Hi all, Newbie here entering the brave new world of HDTV. I have several questions as I start building my new system. First some background: - I just purchased Mitsubishi Diamond WS-55813. Comes tomorrow. Love the set so I had to splurge. - I have an older SOny DVP-S7700 Was the gold standard when I bought it, but I am told I need to upgrade to get the best out of this TV. - I have DirectTV but also have antenna going on the house so I can get OTA HD. Here are my questions . Bear with me as I learn more here: 1. Do I need to upgrade the DVP-S7700? I am told that is not progressive scan. If I need to upgrade, what do folks recommend? 2. I also need to upgrade my Directv receiver. Which one is best for HDTV? I have been told the new Sony is not that great. Any recommendations? 3. Once the dust settles, I am going to buy receiver speaker combo or components to build my surround sound system. Should I purchase my DVD player in a theater in a box package or buy components separately?