I've owned a JVC AV-36D800 for about 5 years. It has a beautiful picture and I've always been very happy with it. I've been looking at new tv's lately and many of the high def tv's don't come close to it's picture quality. While doing a little resolution research I discovered that my tv has 850 lines of horizontal resolution. I know it is interlaced. What does this tv do with the extra lines of resolutuion. I know it's not the same as high def 720p but would buying a progressive scan dvd player give me an improvement in picture quality?
I read this article but got a little confused.

http://www.hometheaterhifi.com/volume_6_3/essay-video-resolution-july-99.html


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