Choose the desktop background from the pictures below and left click it. A larger copy will load. Right click the large picture and then left click on Set as Background, or something to that effect, on the menu which opens. Click the Back button on your browser tool bar or left click the picture to close the image. That's all there is to it. You can put this URL in your Favorites list and come back to change your desktop background as often as you wish. There is nothing to buy and nothing to download.