• Click on the thumbnail.
• You will get a bigger image of the wallpaper in an another window. Right click on it. Among the options that appear, you will find 'Save picture as…' and 'Save as wallpaper'. Choose one of the two.

Tip: Choose 'Save picture as…' if you want to save the wallpaper on to the hard disk of your computer. You can set it as the wallpaper when you choose to later. Choose 'Save as wallpaper' if you want to set it as the wallpaper right away.