After clicking on one of the associated links of the thumbnails below, a large version will appear. Then...

To Download (PC)
Right-click over the image and choose 'Set As Wallpaper.'

To Download (Mac)
Control-click on the link below and select 'Download Image to Disk' (IE) or 'Save this Image as…' (Netscape). Save the file to a location that you will remember. Then go to the Appearance Control Panel, and choose the 'desktop' tab. Click on 'Place Picture…' and choose the picture you just saved. Click on 'set desktop.'