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. There are a number of ways to set the chosen wallpaper as your desktop wallpaper / background. 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! Then set the desktop background using your computers OS's desktop or display control panel and select the image you just saved.
Another way is when the full screen background has loaded, right click it and choose 'save image as...' or 'set as Desktop Background' or 'Set as Background'. When you're ready - you'll know what to do. I think you have it in you. You know already I'm sure. I'll keep it shut now.
Return to wallpaper thumbnails.