Where is a good place to find led lights and circuit boards, also how to make a led light circuit board?

radio shack is ok but they didn't have everything i needed and im not too sure on how to make this project. here is a picture of what im trying to recreate. http://farm1.static.flickr.com/145/360279201_a44f86478d.jpg. So, if you know a web site that has the supplies or a how to, that would be helpful.