Careful with this one - can be slippery when wet. 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 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! 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 image has loaded, right click it and choose 'save image as...' or 'set as Desktop Background' or 'Set as Background'. You'll know what to do when the time comes. I have faith in you. You know already I'm sure. I'll keep it shut now.
Return to wallpaper thumbnails.