Possibly one of the most intersting ones on the site. Yawn! I suppose you what to know how to get it on the desktop now. You can set the wallpaper as you desktop in a number of different ways. One way is to right click the desktop background below and then choose 'save target as...' (IE & Opera) or 'save link as...' (Firefox). Don't forget where you saved it though! Now go to wherever it is you normally set your desktop backgrounds for your computer and selected the saved wallpaper.
Alternatively, when the full screen image is up, right click it and select 'save image as...' or 'set as Desktop Background' or 'Set as Background'. When you're ready - you'll know what to do. I trust you. You probably already know in fact. I'll button it now.
Return to wallpaper thumbnails.