Help with Wordpress header image?

I'm trying to change my header image, I have changed the header background in the CSS file but I want to change the title and description and put in my own image logo.
What would I have to change in this code to use an image instead?

Any help would be appreciated.
Thanks in advance.

<div id="header">
		<h1><a href="<?php echo get_option('home'); ?>/"><?php bloginfo('name'); ?></a></h1>
		<h2><?php bloginfo('description'); ?></h2>
		<div id="searchdiv"><br /><?php include('adsense.php'); ?>
		</div>
</div>

Code (markup):

 

Well in the css file find header and change the image


If you remove then the title and stuff will be removed and u can show the image fully

<h1><a href="<?php echo get_option('home'); ?>/"><?php bloginfo('name'); ?></a></h1>
		<h2><?php bloginfo('description'); ?></h2>

Code (markup):

 

Thats the background image. I want to replace the title text with a logo. when I add it it just shows the alternate text and it is a link the image is just not showing.

 

add this if you are using img for your logo:- <a href="<?php echo get_option('home'); ?>/"><img src="http://imagesource.jpg"></a>

 

Thanks, that did it. I tried that before but I need to add template path

thanks guys!