I want to show the monthly archive of that particular category only.

<?php if (have_posts()) : ?>
<?php $post = $posts[0]; // Hack. Set $post so that the_date() works. ?>
<?php /* If this is a category archive */ if (is_category()) { ?>
<h2> ‘<?php single_cat_title(); ?>’ Category</h2>

<?php /* If this is a tag archive */ } elseif( is_tag() ) { ?>
<h2>Posts Tagged ‘<?php single_tag_title(); ?>’</h2>

<?php /* If this is a daily archive */ } elseif (is_day()) { ?>
<h2>Archive for <?php the_time(‘F jS, Y’); ?></h2>

<?php /* If this is a yearly archive */ } elseif (is_year()) { ?>
<h2 class=”pagetitle”>Archive for <?php the_time(‘Y’); ?></h2>

<?php /* If this is an author archive */ } elseif (is_author()) { ?>
<h2 class=”pagetitle”>Author Archive</h2>

<?php /* If this is a paged archive */ } elseif (isset($_GET[‘paged’]) && !empty($_GET[‘paged’])) { ?>
<h2 class=”pagetitle”>Blog Archives</h2>

<?php query_posts(‘cat=8&paged=’.get_query_var(‘paged’));

?>

<?php while (have_posts()) : the_post(); ?>

<div <?php post_class() ?>>

<h2 id=”post-<?php the_ID(); ?>”>“><?php the_title(); ?></h2>

<?php include (TEMPLATEPATH . ‘/inc/meta.php’ ); ?>

<div class=”entry”>
<?php the_excerpt(); ?>
</div>

</div>

<?php endwhile; ?>

<?php include (TEMPLATEPATH . ‘/inc/nav.php’ ); ?>

<?php else : ?>

<h2>Nothing found</h2>

<?php endif; ?>

This code shows all the post in the particular category which is News. But the problem is that when i click the monthly archives for the month of september, it shows everything even the post from august. and also in august archives, it shows all the post including the september. I think the problem in my loop. Please help me with this