Ray, it looks to me like the jQ theme use text for where a logo would normally go.
The simplest way to put a logo in there would be to open up the header.php template file and find:
Code:
<div id="blog-line">
<!-- blog title and tag line -->
<h1><a href="<?php bloginfo('url'); ?>"><?php bloginfo('name'); ?></a> | <?php bloginfo('description'); ?></h1>
</div>
and replace it with something like:
Code:
<div id="blog-line">
<!-- blog title and tag line -->
<a href="<?php bloginfo('url'); ?>"><img src="/mylogo.png" alt="<?php bloginfo('name'); ?>" /></a>
</div>
You will have to modify the CSS to get the spacing right. Also note, that there are other (better) ways of doing this so that printing the page works better. But this is an easy way to get you going.