Oh no - this one's a stinker! - not really. I suppose you what to know how to get it on the desktop now. There are a few ways to get the wallpaper to be your desktop 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! Next you need to go to where your computer's operating system display settings and set the image as your background / wallpaper.
Another way is when the full screen wallpaper has loaded, right click it and choose 'save image as...' or 'set as Desktop Background' or 'Set as Background'. When the time comes - you'll know what to do. A walk in the park for you. My guess is you already know. I'll zip it for now.
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