How do I add comment count in single post?

I’m working on LA Snark and I’m trying to get the number of comments to appear within a single post. They show up next to the byline on the index, but disappear in the single post version.

Also, I’d like each single post to end with a line that says how many comments there are. Something like “This post has 4 comments, join the conversation!” or “This post has no comments, be the first to post!”

Your help is greatly appreciated.

Here is my single post code:

<?php get_header(); ?>

<div id=”primary” class=”single”>

<?php if(have_posts()) : ?>

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

<div class=”entry hentry” id=”post-<?php the_ID(); ?>”>

<h1 class=”entry-title”><?php the_title(); ?></h1>

<div class=”entry-byline”>
<span class=”entry-date”><abbr class=”updated” title=”<?php the_time(‘Y-m-d\TH:i:sO’); ?>”><?php the_time(‘M jS, Y’); ?></abbr></span>
<address class=”author vcard”><?php _e(‘by ‘); ?>“><?php the_author(); ?>. </address>

<?php edit_post_link(‘Edit’, ‘[‘, ‘]’); ?>
</div>

<div class=”entry-content”>
<?php the_content(‘[Continue reading ⇒]’); ?>
<?php wp_link_pages(‘before=<p>‘ . __(‘Pages:’) . ‘&after=</p>’); ?>

</div>

<p class=”entry-meta”><span class=”entry-categories”><?php _e(‘Posted in: ‘); ?><?php the_category(‘, ‘); ?>.</span>
<?php if(function_exists(‘the_tags’)) { ?>
<span class=”entry-tags”><?php the_tags(‘Tagged: ‘,’ · ‘,’
‘); ?></span>
<?php } ?></p>

</div><!–.entry–>

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

<?php comments_template(); ?>

<?php endwhile; ?>

<?php else : ?>

<div class=”entry”>
<h2 class=”entry-title”><?php _e(‘Not Found’); ?></h2>
<div class=”entry-content”>
<p>Sorry, what you are looking for isn’t here.</p>
<?php include (TEMPLATEPATH . “/searchform.php”); ?>
</div>
</div>

<?php endif; ?>

</div><!–#primary–>

<?php get_sidebar(); ?>

<?php get_footer(); ?>