Mac Users: Choose the size that matches your monitor resolution. The image will open in the browser window. Save the image to a location on your hard drive. Open the System Preferences, click Desktop & Screen Saver, and click on Choose Folder to navigate to where you saved the image.
Windows Users: Choose the size that matches your monitor resolution. The image will open in the browser window. Right-click on the image and from the pop-menu choose "Set as background."
