Blog Page Category Template?

Currently I’m using Expositio from WPSHOWER and I would like to have a blog page. Sadly the theme doesn’t have this built in and so I figured that I would need to create a new page entitled “News” and apply a page template that would publish posts from a catergory “News”. Sadly I’m not sure how to do this and have followed a tutorial on there and it hasn’t worked.

This is the page template I copied from the tutorial and applied to my blog page….
It displays posts, but it doesn’t display them formatted properly.

<?php
/*
template name: News
*/
?>

<?php get_header(); ?>

<div id="news_post_container">

/* this is the important part: you are creating a query that will post 3 posts from the news category and creating the paging - change any of the parameters that doesn't fit what you want */

<?php
$temp = $wp_query;
$wp_query= null;
$wp_query = new WP_Query();
$wp_query->query("category_name='news'&showposts=3".'&paged= '.$paged);
while ($wp_query->have_posts()) : $wp_query->the_post();
?>

/* This is the part that you actually see on the page. I've used the post title meta (which is in my includes folder, and an excerpt */

<div <?php post_class() ?> id="post-<?php the_ID(); ?>">
<div id="post">
<h3> <a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h3> ? [posted: <?php include (TEMPLATEPATH . '/includes/meta.php' ); ?>]
<p><?php the_excerpt(); ?></p>
</div>
</div>

<?php
if (($wp_query->current_post + 1) < ($wp_query->post_count)) {
echo '<div class="post-item-divider">-----</div>';
}
?>

<?php endwhile; ?>

/* Here you create the Next/Back links */

<div class="navigation">

<span class="next"><?php next_posts_link('? Older Entries') ?></span> /
<span class="back"><?php previous_posts_link('Newer Entries ?')?></span> 

</div>

<?php $wp_query = null; $wp_query = $temp;?>

<?php wp_reset_query(); ?>
</div>
<?php get_footer(); ?>