Follow these steps to display a large image across multiple monitors: 1.Right click on the Desktop background and select Personalize. 2.Click on Desktop Background 3.Select a background image that is at least as wide as the combined resolution of both of your monitors. For Example, I have two 19" monitors that have a resolution of 1280×1024. I need an image of 2560×1024 or greater so that it can be displayed across both monitors. 4.Select Tile for picture positioning option. This is the only option that will display your background image across multiple monitors. 5.Select Save Changes. Your background image now should be displayed across both monitors instead of having the same image displayed on both monitors.