The way I understand it is that to play any HD movie at full resolution,(from Blu-ray) you need a HDCP compatible video card and monitor/TV. But on a bunch of web sites they are saying this isn't possible yet, you must wait for VISTA and compatible parts. Please tell me I'm wrong.
a blu-ray HD video is a waste of resources if you plan to watch it on your PC monitor... unless your PC uses a 42" monitor or larger.
and if you plan to watch it on a real tv.. then why put stress on your PC to watch a movie.
if your video card is a capable of 1920x1020 res ... then it is already an HD resolution.