For PCs:
Click on your computer resolution
(i.e. 800 x 600, 1024 x 768).

This will take you to a page containing only the larger version of the photo.

Right-click on the image and select “Set as Background.”

For Macs with OS/X:
Click on your computer resolution (i.e. 800 x 600, 1024 x 768).

This will take you to a page containing only the larger version of the photo.

Click and hold on the image and select “Download image to disk”.

Save image on your desktop.

Go to Apple Menu and select “System Preferences”.

When the “System Preferences” window opens, click the “Desktop” button.

Drag the image from your desktop to the preview box in the Desktop Preferences window.