i know that. i dont know where to insert the image. heres the end of the header.php
</head>
<body>
<div id="page">
<div id="header">
<h1><a href="<?php echo get_settings('home'); ?>"><?php bloginfo('name'); ?></a></h1>
<div class="description"><?php bloginfo('description'); ?></div>
</div>
<img src="images/line.gif" width="433" height="1" alt="" />