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. Setting the background as your desktop wallpaper can be done in a number of ways. You can either right click desktop wallpaper beow and then select 'save target as...' (IE & Opera) or 'save link as...' (Firefox). If this is your chosen route, remember where you save it! 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'. It'll come to you when the time is right. I know you can do this. You know already I'm sure. I'll keep a lid on it now.
Return to wallpaper thumbnails.