OK I'm being thick here I'm sure but I don't understand! I've read about the loop but it's not clear to me - sorry
The code I have in my archive.php is
<?php get_header(); ?>
<div id="content">
<?php include(TEMPLATEPATH."/sidebar.php");?>
<div id="contentmiddle">
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class="contenttitle">
<h1>" rel="bookmark"><?php the_title(); ?></h1>
<p>Filed Under <?php the_category(', ') ?> | <?php comments_popup_link('Leave a Comment', '1 Comment', '% Comments'); ?></p>
</div>
$query_string."&orderby=title&order=ASC"
<!--
<?php trackback_rdf(); ?>
-->
<?php endwhile; else: ?>
<p><?php _e('Sorry, no posts matched your criteria.'); ?></p><?php endif; ?>
<p><?php posts_nav_link(' — ', __('← Previous Page'), __('Next Page →')); ?></p>
</div>
</div>
<!-- The main column ends -->
<?php get_footer(); ?>
That's it I but where should I put the code you suggested?