PC:
1. If necessary, determine your monitor’s resolution. (Right click on an empty area of your desktop and choose Properties. Click
the Settings tab. In the Screen Area box you will see "800 by 600 pixels" or similar numbers. This is your monitor resolution.)
2. Download the correct file to your desktop.
3. Right-click on the image and from the pop-menu choose “Set as Wallpaper”.


Mac:
1. If necessary, determine your monitor’s resolution. (From the Apple Menu, choose Control Panels and select Monitors.
In the Resolution box, your monitor resolution will be highlighted.)
2. Download the correct file to your desktop.
3. From the Apple Menu, choose System Preferences and click Desktop.
4. In the Collections drop-down, locate your saved image. Drag the image into the screen well to set it as your desktop picture.