First, download ResHack (GOOGLE IT!!). Open the EXE. Open an explorer window and navigate to C:\Windows\System32\. Find the file imageres.dll. You’ll need to first take ownership of the file, and then give yourself full permissions. If you don’t know how to do that, Google it or something, I’m not gonna hold your hand through this. After you’ve taken permissions, open it in ResHack. Look under the IMAGE resources and find your desktop resolution that corresponds to a resource number: 5031 = 1280×1024 5032 = 1280×960 5033 = 1024×768 5034 = 1600×1200 5035 = 1440×900 5036 = 1920×1200 5037 = 1280×768 5038 = 1360×768 5039 = 1024×1280 5040 = 960×1280 5041 = 900×1440 5042 = 768×1280 5043 = 768×1360 Note: If your resolution is not listed, you should use 5031. The image will stretch. Find the one that matches your resolution, and open that numbered folder. Right click on the “1033″ and select “Replace Resource”. Browse to another image (preferrably of the same size… I don’t know what Vista does as far as stretching/tiling the image). When it asks you for the resource info, type this in: Resource Type: IMAGE Resource Name: 50xx (your screen resolution from above, the 50__ number) Resource Language: 1033 Your new image should appear on-screen.