That does sound like the same problem. Here's what I have learned since yesterday:
1. It is definitely not the TV. I bought a cheap progressive scan DVD player and it puts out an absolutely beautiful picture using the same component cables that came with my xbox hd pack.
2. It ONLY happens when playing a DVD movie on the xbox. Games do not have the same problem, regardless of if they are running 480i, 480p, 720p, or 1080i.
3. Although I did not patch the ms dash to play progrssive scan, I did try playing movies through DVD-x2 and I still have the same green banding.
I got my xbox when they first came out, and it has a manufacture date of 12-05-2001. I believe that means it is a 1.0, right?
The television is a Philips 55pl977s, which is a 55" LCOS rear-projection. I'm not that worried about this problem anymore, since we won't be playing movies through the xbox, but it is still kind of puzzling, and I'd like to find out what is causing it.