Clicking the image name on the left will launch the pattern into this frame.

Mac Users! Recommended: use a desktop scheme from Kaleidoscope to go with your desktop pattern. You will need the Kaleidoscope extension, free at http://www.kaleidoscope.net; choose a desktop theme while you are there. Pictured in these screenshot is Scrollites Gold by Layne Karkruff. (Get Scrollites Gold here).