Older entries not working and url problem

This is the first time I try to build a site in wordpress. I have two (right now, hehe) issuses that I can’t find the solution of.

1. Older entries is not working on my newspage. Here’s news template:

<?php
/*
Template Name: Nyheter
*/
?>
<?php get_header(); ?>
<div id="bg_alexandra" style="height:490px;">

<div id="index_content">
<div id="page_content">
<?php if (have_posts()) : ?>

<?php while (have_posts()) : the_post(); ?>
<div class="single" id="post-<?php the_ID(); ?>"></div>
<?php the_content('Read the rest of this entry &raquo;'); ?>
<div class="clear"></div>
<?php endwhile; endif; ?>

<br />        

	<?php if (have_posts()) : ?>
<?php query_posts('category_name=nyheter&showposts=2'); ?>
<?php while (have_posts()) : the_post(); ?>
<h2><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></a></h2>
<span class="datum"><?php the_time('Y-m-d, G:i'); ?></span>
<?php the_content('Read the rest of this entry &raquo;'); ?>
<br />
<?php endwhile;?> 

		<div class="navigation">
			<div class="alignleft"><?php next_posts_link('&laquo; Older Entries') ?></div>
			<div class="alignright"><?php previous_posts_link('Newer Entries &raquo;') ?></div>
		</div>

	<?php else : ?>

		<h2 class="center">Not Found</h2>
		<p class="center">Sorry, but you are looking for something that isn't here.</p>
		<?php get_search_form(); ?>

	<?php endif; ?>

 <div class="clear"></div>
</div>
</div>
</div>
<div class="clear"></div>
<?php get_footer(); ?>

2. I can’t change my theme so the url is written as text insted of id-numbers. It only says “page cannot be found”. Any suggestions?