Re: HD Requirements and HDMI
Got my HDMI-to-DVI cable a couple of days ago and hooked it up yesterday between my Mitsu DLP HDTV—whose model number I don't know because I'm not composing this from home, but is about two years old—and my brand new Toshiba HD-A3.
I immediately threw in one of the DVDs that wouldn't upconvert through component (The Fifth Element Superbit), and it went to 1080i without a hitch. Watched the entire thing and never noticed a single issue with the picture. And while it certainly didn't look anywhere near as good as an HD-DVD, it's the best I've seen that DVD look. The scaling from 480p to 1080i makes a subtle yet still-noticeable improvement.
Threw in a couple of HD-DVDs as well, to check for any issues there through the cable, and they looked wonderful.
So, based on this limited testing and not knowing any details about your setup, davewe, I'd say as long as your Mitsu 48311 has a DVI input, you should be fine.