Artikelanzahl im Archiv verändern

<?php 
get_header();
?>
<div id="content">
<?php include(TEMPLATEPATH."/werbungbreit.php");?>
  <div class="entry">
    <!-- loop -->
    <?php if (have_posts()) : ?> 
[B]     <?php $post = $posts[0]; // Hack. Set $post so that the_date() works. ?>[/B]
    <?php /* If this is a category archive */ if (is_category()) { ?>
    <h1>Archiv f&uuml;r '
      <?php echo single_cat_title(); ?>
      ' </h1>
    <p>
      (
      <em>
        zeitlich sortiert
      </em>
      )
    </p> 
    <?php /* If this is a daily archive */ } elseif (is_day()) { ?>
    <h1>Archiv f&uuml;r 
      <?php the_time('F jS, Y'); ?></h1> 
    <?php /* If this is a monthly archive */ } elseif (is_month()) { ?>
    <h1>Archiv f&uuml;r 
      <?php the_time('F, Y'); ?></h1> 
    <?php /* If this is a yearly archive */ } elseif (is_year()) { ?>
    <h1>Archiv f&uuml;r 
      <?php the_time('Y'); ?></h1> 
    <?php /* If this is a search */ } elseif (is_search()) { ?>
    <h1>Suchergebnisse</h1> 
    <?php /* If this is an author archive */ } elseif (is_author()) { ?>
    <h1>Autor Archiv</h1> 
    <?php /* If this is a paged archive */ } elseif (isset($_GET['paged']) && !empty($_GET['paged'])) { ?>
    <h1>Blog Archiv</h1> 
    <?php } ?>
    <ul>
      <?php //query_posts ?><br />
      <?php while (have_posts()) : the_post(); ?>
      <li>
      <a href="<?php the_permalink() ?>">
        <?php the_title(); ?></a> |
      <small>geschrieben am 
        <strong>
          <?php the_time('j. F Y') ?></strong></small> </li> 
      <?php endwhile; ?>
    </ul> 
    <div id="navigation" class="index"> 
      <?php previous_posts_link('&laquo; Neuere Eintr&auml;ge ') ?>
      <?php next_posts_link('&Auml;ltere Eintr&auml;ge &raquo;') ?>
    </div> 
    <?php else : ?>
    <?php include (TEMPLATEPATH . '/notfound.php'); ?>
    <?php endif; ?>
    <!-- end loop --> 
  </div>
<?php include(TEMPLATEPATH."/werbungbreit.php");?>
</div>
<?php get_sidebar(); ?>
<?php get_footer(); ?>

<?php 
get_header();
?>
<div id="content">
<?php include(TEMPLATEPATH."/werbungbreit.php");?>
  <div class="entry">
    <!-- loop -->
   <?php query_posts($query_string . "posts_per_page=-1") ; ?>    
    <?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()) { ?>