"My mistake. DVDSP only does a Mac readable HD."
Not exactly true. You can burn HD-DVD's in DVD SP that will playback in HD on the now extinct, consumer HD-DVD players that came out to compete with consumer Blu-Ray players. (I used them for trade shows for a little while)
Another playback source to consider is the WD Media Player. I use these for trade shows as well as client presentations. I give one to a client, so I can bring a USB flash drive to their office and playback their video in HD. They love that!
Here's a thread on the topic.
http://forums.creativecow.net/thread/8/1021711#1030817
Ernie Santella
Santella Productions Inc.
www.santellaproductions.com