Code:
<a href="http://www.target-url.com"><img src="location-of-banner/path-to-banner" width="width-in-pixels" height="height-in-pixels" border="0"></a>
Basically put the banner on the page where you want it then add the hyperlink. The above code is an example. You can just drop the code into your HTML and replace the info in quotes with the correct info for your banner.