Yep Apache14 I think your right its power dvd 7 deluxe or something like that,that I am currently using.
It says High Definition in big bold red letters when you first start the program up.
I was also using/playing around with power dvd beta 8 but its all in chinese or some other asian script but
you can navigate loading a DVD or HD-DVD by the typical shape icons like sqare,triangle,arrows,ect..
So I reinstalled the Power DVD 7 Deluxe and will remain using this untill something better comes and runs in
English.
Dont quote me on this either but I think windows media player 11 not the beta but the full version also plays
HD-DVDs using Nvidia's Pure-HD drivers and codec.
If you guys cant get your HD-DVD's to play on your pc remember you need a HDCP Video card.
I also cannot claim that I have tried every HD-DVD out there either as I only own 4 as of now.
KingKong,Ray,Constintine,and Polar Express which of the 4 all play great on my pc using the 360's HD-DVD
add on drive.