Thanks for your reply.
I am using the Kubrick Default Theme.
My single post code, now calls the header text as follows :-
[please use the 'code' button to mark the code]
<div id="header" role="banner">
<div id="headerimg">
<h2><a>/"><?php bloginfo('name'); ?></a></h2>
<div class="description"><?php bloginfo('description'); ?></div>
</div>
___
and now calls the post title as follows :-
<div <?php post_class() ?> id="post-<?php the_ID(); ?>">
<h1><?php the_title(); ?></h1>
___
My StyleSheet.css is now as follows :-
[huge amount of CSS code moderated - please post a link to your site]
___
I've now got the font sizes OK, and just need to change the color of the header site-name text to white, and the color of the post title to black, and decrease the spacing before the post title.
Thanks for any info on this :)
Chris-