Here is my banner to put it on your site copy and paste this code.

<a href="http://agentemo619.wordpress.com/"><img src="http://agentemo619.files.wordpress.com/2008/09/agentemobanner.gif" alt="Please Click Here" border="0" /></a>

Just copy and paste the code where you want it!!

When you put it on it will look like this.