Help me show post navigation inside a category loop

Hi guys,

I have this piece of code pumping out a category loop on one of my WP pages (blog page):

<?php // if blog page
if(is_page('9')){ ?>
<?php // pull in desired category post content
$lastposts = get_posts('numberposts=10&category=19');
foreach($lastposts as $post) : setup_postdata($post); ?>
<h2>" id="post-<?php the_ID(); ?>">
<?php the_title(); ?>
</h2>
<?php the_content(); ?>
<p class="postmetadata">
<?php the_tags('Tags: ', ', ', '
'); ?>
Posted in
<?php the_category(', ') ?>
|
<?php edit_post_link('Edit', '', ' | '); ?>
<?php comments_popup_link('No Comments »', '1 Comment »', '% Comments »'); ?>
</p>
<?php endforeach;
} ?>


My only issue with the code is that I don’t get posts navigation now in order to navigate to older posts and back again, since my numberposts=10 parameter limit is 10.

Could anyone help me modify the above so it allows my users to navigate to older posts and back again? The only solution I have right now is to display infinite posts (not very scalable :[ )

Thanks in advance,
L