Quote Originally Posted by cairnswm
Longhorn was supposed to come out with a 3D interface. From the screen shots I've seen its not quite at this sort of depth.
Longhorn uses the acceleration capabilities of the 3D card to enhance the visual quality of the user interface, not to provide an actual 3D interface. Similar to how Mac OS X renders its windows to textures and then uses the 3D card to render those textures to the display.