Displaying post titles on single news story page

Hi guys,

So I have my home page on my site which displays all the post titles in a list:
|———————-|
|–post title 1——–|
|–post title 2 etc—-|
|———————-|
On my single.php page -> lets say you click on post 1, I want the following layout:

|—————|————————–|
|- post title 1 | POST TITLE 1————-|
|- post title 2 | “Post title one content” |
|—————|————————–|
So for the home page I have this code which displays the 5 newest titles:

<?php
   query_posts('showposts=5');
?>

<?php if (have_posts()) : ?>
<h2 id="broadcast">Broadcast.</h2>
 <ul id="broadcast">
 <?php while (have_posts()) : the_post(); ?>
	<li id="broadcast">
	<a href="<?php the_permalink(); ?>"><?php the_title(); ?>.</a>
	</li>
<?php endwhile; ?>
</ul>
<?php endif; ?>

So I copied and pasted this into the single page, but now instead of just displaying one news story, it displays all the stories!! This is the code I have:

<div id="news_menu_left">
<?php
   query_posts('showposts=100');
?>
<?php if (have_posts()) : ?>
<ul id="news_left_titles">
 <?php while (have_posts()) : the_post(); ?>
	<li id="news_left_titles">
	<a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>
	</li>
<?php endwhile; ?>
</ul>
<?php endif; ?>
</div>

<div id="news_container_single">
	<?php if(have_posts()) : ?><?php while(have_posts()) : the_post(); ?>

		<div class="post" id="post-<?php the_ID(); ?>">

			<h2 id="news_page_title"><?php the_title(); ?>.</h2>

			<div class="entry">
            	<div class="post_content">

				<?php the_content(); ?>

                </div>

                <p class="postmetadata">
				<?php the_time('l, F jS, Y') ?><?php _e(' | Share on Facebook'); ?> <br />
				</p>

			</div>
			<div id="comments-template">
			<?php comments_template(); ?>
			</div>
		</div>

	<?php endwhile; ?>

		<div class="navigation">
			<?php posts_nav_link(); ?>
		</div>

	<?php else : ?>

		<div class="post">
			<h2><?php _e('Not Found'); ?></h2>
		</div>

	<?php endif; ?>

</div>

So from the above code, the div “new_menu_left” should display the list of 100 news titles down the left, and then the div “news_container_single” should show the one news story selected from the home page and it’s content. I know I’m nearly there,
PLEASE PLEASE CAN SOMEONE HELP!!!!