PC Download Instructions: MAC OS X Download Instructions:
  1. Right-click on the image and choose "Set As Wallpaper"
  1. Control-click and select "Download image to Disk".
  2. Save image to desktop.
  3. Go to Apple menu > System Preferences > Personal section and select "Desktop".
  4. On the "Collection" pulldown menu, go to "Choose Folder" and locate the appropriate wallpaper.