Directions for downloading the backgrounds:
(Windows only - sorry Mac users
but I'm not familiar with Macs!)
1. Click on your monitor size next to the picture you would like to download. (If you don't know your monitor size, right-click on your desktop, click on "Properties", click on the "Settings" tab. On the Settings page, you should see "Screen Resolution" at the bottom. It will be either 800 X 600 pixels, 1024 X 768 pixels, etc...)
2. Right click on the opened picture and choose "Set as Background".
3. Enjoy!