Under the full width header, just put a centering container that is a fixed width. Put all of your page's content in that container. For example -
<div id="header">This will be full width</header>
<div id="content" style="width:980px;margin:0 auto;">This will be 980px wide and centering</div>
<div id="footer">This will be a full width footer</div>
Thank you for your help. I was on the right track all along, I should have just started with a page from scratch rather than work ith a template. Thank you again.