Check out the wallpaper/backgrounds you can use on your computer! INSTRUCTIONS: PCs: Click on the proper resolution below each choice. Right click on the resulting image and select 'Set as Wallpaper.' Macs: Click on the proper resolution below each choice. CTRL + click on the resulting image and select 'Set as Desktop Background.' Resolution choices: 1024x768 1280x1024 1440x900 Resolution choices: 1024x768 1280x1024 1440x900