edit navbar template:
here is the "blank" format to use...
Code:
<a href="http://target url goes here"><img src="URL of the image location here" border="0" width="XX" height="XX">Link Text Here</a>
Remember to use the correct url (either full or relative) for both your target and the image location. You may change the border, width and height values, but make sure they are in quotation marks.
Insert the code where you want it to appear. We have a few examples in our navbar at
http://hearts4horses.net/member_forum/upload