If you're running Windows Vista in its Home Premium or Ultimate versions, then you can play DVDs as part of the operating system. Remarkably, if you are running the Home Basic, Business, or Enterprise versions then you get only basic DVD playback capabilities. To get features such as DVD chapter listings, cover graphics and full-screen video playback controls, you will need to provide an add-on for Windows Media Player such as Roxio's CinePlayer DVD Decoder Pack for Windows Vista or CinePlayer DVD Decoder for Windows Vista. Windows 7 ships with version 12 of Windows Media Player, which will provide greater functionality and video compatibility.