I have been researching how to get the best DVD picture out of my HDTV. I have a RP HDTV (Toshiba 61hx70) and a Sony Progressive scan DVD player ( dvp-ns425p). My xbox is running HD and I have a box from the cable company that converts to HD signal. Do I have to have a HD converter to view DVDs in 480p? When I turn on or off the progressive scan it looks no different to me. I guess maybe my TV doesn't support 480p. Man this is confusing. I have everything I want in HD but DVDs. Can anyone advise me? I promise I will pass on the info to other people.