Jim:
Go to Vladstudios. com . The wall and app are the free version called Dexclock. If you want the free version your selection of walls and resolutions is limited. If you want the paid version, then you have the full range of all his regular and hi definition/widescreen walls.
The Dexclock is integrated as an app in the wall and you get a systray icon from which you can configure it.