Oh no - this one's a stinker! - not really. 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! Next goto your computers display control panel and set the background to the image you just saved.
Another way is when the full screen wallpaper is shown, right click it and select 'save image as...' or 'set as Desktop Background' or 'Set as Background'. You'll know what to do when the time comes. I trust you. I bet you already know. I'll button it now.
Return to wallpaper thumbnails.