My god, do you ever wonder why your name was changed to asshat? And, you shouldn't even be talking since you yourself obviously don't know what a progressive scan picture is. It's not just resolutions 800x600 and up (how would 480p qualify then, though you've stated that as one?). In fact, resolution has nothing to do with it.

The difference between interlaced and progressive simply put is that in an interlaced signal a picture is broken up into half, though these halves are more like even and odd numbers (where half of all natural numbers are even or odd, but even and odd alternate in sequence). The "even" pieces are shown, followed by the "odd" pieces, and these alternate in a cycle at a rate of 60 per second (50Hz for PAL). Since only really half the picture is being transmitted at any given instant, bandwidth is halved without halving the resolution. Progressive scan simply doesn't bother with this and just shows the whole picture at once. All computer monitors - whether CRT, LCD, plasma, whatever - are progressive scan more-or-less (though they are not restricted to a vertical refresh rate of 60Hz like pro scan TVs). So you're fine. :thumbup:

PS - the p at the end of 480p and 720p stand for progressive scan. Also, 1080i is actually an interlaced (poke, asshat, stab) signal spec, which is what the "i" stands for. yes, "progressive" starts with a p, not i.