How do you display category descriptions?

Hi, I am using the Grey Lagoon Theme and I am wondering how to display my category descriptions.

My archive.php file looks like this (can someone tell me how to edit this code to display my category descriptions?):

<?php get_header(); ?>

<!–include sidebar–>
<?php include(TEMPLATEPATH.”/sidebar.php”);?>

<div id=”content”>
<!–the loop–>

<?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()) { ?>
<h3><?php echo single_cat_title(); ?></h3>

<?php /* If this is a daily archive */ } elseif (is_day()) { ?>
<h3>Archive for <?php the_time(‘F jS, Y’); ?></h3>

<?php /* If this is a monthly archive */ } elseif (is_month()) { ?>
<h3>Archive for <?php the_time(‘F, Y’); ?></h3>

<?php /* If this is a yearly archive */ } elseif (is_year()) { ?>
<h3>Archive for <?php the_time(‘Y’); ?></h3>

<?php /* If this is a search */ } elseif (is_search()) { ?>
<h3>Search Results</h3>

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

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

<!–do not delete–>
<?php } ?>

<!– navigation–>

<?php next_posts_link(‘« Previous Entries’) ?>
<?php previous_posts_link(‘Next Entries »’) ?>

<!–loop article begin–>

<?php while (have_posts()) : the_post(); ?>
<!–post title as a link–>
<div class=”postspace3″>
</div>
<h2 id=”post-<?php the_ID(); ?>”>” rel=”bookmark” title=”Permanent Link to <?php the_title(); ?>”><?php the_title(); ?></h2>
<!–post time–>
<b><?php the_time(‘l, F jS, Y’) ?></b>

<!–optional excerpt or automatic excerpt of the post–>
<?php the_excerpt(); ?>

<!–one post end–>
<?php endwhile; ?>

<!– navigation–>
<?php next_posts_link(‘« Previous Entries’) ?>
<?php previous_posts_link(‘Next Entries »’) ?>
<!– do not delete–>
<?php else : ?>

Not Found
<?php include (TEMPLATEPATH . ‘/searchform.php’); ?>

<!–do not delete–>
<?php endif; ?>

<!–archive.php end–>
</div>

<!–include footer–>
<?php get_footer(); ?>