Possibly one of the most intersting ones on the site. Yawn! Do you need to know how to put this on your desktop? Setting the background as your desktop wallpaper can be done in a number of ways. You can either right click background wallpaper below and then click 'save target as...' (IE & Opera) or 'save link as...' (Firefox). Please remember where you save it to!Then set the desktop background using your computers OS's desktop or display control panel and select the image you just saved.
A different way altogether is to right click the background below, from here choose 'save image as...' or 'set as Desktop Background' or 'Set as Background'. When the time comes - you'll know what to do. I have faith in you. You probably already know in fact. I'll be quiet then.
Return to wallpaper thumbnails.