Older post links

Hi
I have a page that displays 8 “featured news” posts and under that I have a list of older news links but I can’t quite figure out how to get the older news links to display back dated featured news posts. Preferably I’d like the old news to start when the 8th post gets knocked out from the featured news section, so it would then go to the old news section.

The code I have for the old news:

<?php $posts = get_posts('category=4&numberposts=8'); ?>
<?php if( $posts ) : ?>
<div class="old-posts">
<h3 class="mast">Older Posts</h3>
<ul class="arrow">
<?php foreach( $posts as $post ) : setup_postdata( $post ); ?>
<li><a href="<?php the_permalink() ?>" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></a></li>
<?php endforeach; ?>
</ul>
</div>
<?php endif; ?>

Code for hole page:

[Code moderated as per the Forum Rules. Please use the pastebin]

Thanks