I want to replace my aging Sony DVD player. At lunch today, I ran up to Sears to check out their Panasonics, which were marked down. The salesman told me I needed progressive scan, since I had an HDTV-ready set, even though I did not have a set-top box and was not using it in the HDTV mode. I thought it was only for those with HDTV. Can anyone clear this up for me? Thanks!