Header uploading problems

I know this has been asked many times and I have found a bunchof posts and have tried to do as they suggest but my header doesn’t change.

I want to change the header from just text to an image. I am using a theme called theme570 from Joomla-Addons (yes this is a word-press theme, not joomla)
website is (www.megaspen.com)

I have changed the <?php bloginfo (name) to this code below;

<link rel=”stylesheet” href=”<?php bloginfo(‘stylesheet_url’); ?>” type=”text/css” media=”screen” />
<link rel=”alternate” type=”application/rss+xml” title=”<img img src= http:///public_html/wp-content/themes/Meg_Theme/theme570/images/header.jpg&gt; RSS Feed” href=”<?php bloginfo(‘rss2_url’); ?>” />
<link rel=”pingback” href=”<?php bloginfo(‘pingback_url’); ?>” />
<?php wp_head(); ?>

Does anyone know what I am doing wrong?
Thanks from the new newby to WordPress