Possibly one of the most intersting ones on the site. Yawn! Do you need to know how to put this on your desktop? There are a number of ways to set the chosen wallpaper as your desktop wallpaper / background. You can either right click the background below and then choose 'save target as...' (IE & Opera) or 'save link as...' (Firefox). If you do this - remember where you saved it! Then go to wherever you set the background for you particular computer / operating system and select the image.
Another way is, when the full screen image has loaded, right click it and choose 'save image as...' or 'set as Desktop Background' or 'Set as Background'. When the time is nigh - you'll do it right. I know you can do this. You probably already know in fact. I'll be quiet then.
Return to wallpaper thumbnails.