If you do a View Source, you will find:
Code:
<div id="indexDefaultMainContent" class="content"><a href="http://www.lulu.com/content/466605"><img src="images/large/e-start-book.gif" alt="get your manual today" title="Have you got yours yet? Join the 1000's of Zen Cart users that have bought the only comprehensive owners manual !" /></a>
<p>This content is located in the file at: <code> /languages/english/html_includes/YOUR_TEMPLATE/define_main_page.php</code></p>
<p>You can quickly edit this content via Admin->Tools->Define Pages Editor, and select define_main_page from the pulldown.</p>
<p><strong>NOTE: Always backup the files in<code> /languages/english/html_includes/your_template</code></strong></p>
</div>
You have not updated/changed that information from the default Zen Cart install ...
Simply update it yourself by going to Admin->Tools->Define Pages Editor, and select define_main_page from the pulldown.