No - most DVD players already offer progressive high-scan, as well as playback in different formats. If you want the high-resolution without paying for a Blu-Ray, then there's a DVD player that plays DVDs at 1080pi resolution. Crutchfield.com has some.
And folks, please stop talking me into getting a 37" panel. The space I plan to put the panel (where my now-dead 27" CRT TV now sits awaiting its final fate) won't fit a 37" panel.