Looking forward to watching HD movies when you upgrade to Windows Vista next year? Tough luck: unless you're running the 64-bit version of Vista on a 64-bit processor (like the Core 2 Duo or recent Athlons), it looks like it won't play back copy protected HD video. The culprit? Windows itself: the 32-bit version of Vista can run unsigned code, which Microsoft thinks might provide a path to intercept the video and copy it.
No Full HD Playback for 32-bit Vista [Slashdot]