Hehe. I don't do it very often, so I always have to go back and figure it out. It really took me about ten minutes to get it right this morning. Here's the basic code I used. You can leave out the < center> code if you don't want your image centered.

< a href="The URL You Want The Pic To Go To">< center>< img src="Your Image URL Here"/>< /a>< /center >