CSS: 

#header {
	background: transparent url('http://www.networkperformancedaily.com/images/header.png') center left no-repeat;
	height: 98px;
	overflow: hidden;
	position: relative;
}                

HTML:

		<div id="header">
			<h1><a href="<$MTBlogURL$>">Blog name</a></h1><h2>Blog description</h2>
		</div>