HD DVD is a disc format that allows viewers to watch movies in high definition. An HD DVD movie can be played on televisions, laptops and desktops. An HD DVD drive is required to play an HD DVD movie on a computer, and Microsoft's Windows Media Center can be used to play an HD DVD after the disc is inserted into the computer's HD DVD drive.
Click on the "Start" menu, and launch "Windows Media Center."
Insert the HD DVD into the computer's HD DVD Drive.
Click on the "Play DVD" icon in the Windows Media Center