Here's a clickable link. It's easy and quick to do. Read about markup tags below the "Your response" dialog box.
http://news.cnet.com/8301-17938_105-57404598-1/student-turns-old-turntables-into-drawing-machine/?tag=cnetRiver
http://news.cnet.com/8301-17938_105-57404598-1/student-turns-old-turntables-into-drawing-machine/?tag=cnetRiver