Not sure if this is what you were looking for, but if you would like to have one banner on your website that doesn't change- or switch from banner to banner. You would insert the following HTML code into wherever you want the banner to be. For ex:
<a href="http://www.ninjai.com" target="_blank"><img src="images/ninjai.gif" border="0"></a>
That is it. The href is the link to the website. The img src is where the image is located on your website. You could also link to an image on another website, like
http://www.ninjai.com/images/banner1.gif.