you don't need to... just click on the picture and when it pops up on your screen: right click and go down to "Set as Backgroud" then it will automatically fit itself on to your desktop... =)
cool picture but dude that warning that you get for right clicking on the preview picture is blistering. kinda harsh don't you think? don't get me wrong i'm a dedicated caedeshead and if i had something outstanding to contribute to this site i would.