wie kann ich die Listung von Objekten beeinflussen?

<?php
/**
 * @package WordPress
 * @subpackage Default_Theme
 */


get_header();
?>


    <div id="content" class="narrowcolumn" role="main" >
    <div  id="icontent">
        <?php if (have_posts()) : ?>
       <?php $post = $posts[0]; // Hack. Set $post so that the_date() works. ?>
               <?php while (have_posts()) : the_post(); ?>
        <div <?php post_class() ?> style="margin-left:10px;" >
                <br /><img src="
<?php 
echo  thumbGen(get_post_meta($post->ID, '_thumb1_value', true),"95","61"); ?>
" border="1" width="95px" height="61px"  style="float:left;margin-right:5px;"   ><h3  id="post-<?php the_ID(); ?>"><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h3>
    <div class="entry">
                    <div id="info">
                <li><label>Ort des Objektes</label> : <span><?php echo get_post_meta($post->ID, '_city_value', true) ?></span>
                <li><label>Art des Objektes</label> : <span><?php echo get_post_meta($post->ID, '_kind_value', true) ?></span>
                <li><label>Gr&ouml;&szlig;e</label> : <span><?php echo get_post_meta($post->ID, '_size_value', true) ?>qm</span>
                <li><label>Preis</label> : <span><?php echo get_post_meta($post->ID, '_prize_value', true) ?>€</span>
                &ensp;&ensp;&raquo;&ensp;<a href="<?php the_permalink() ?>">weiterlesen...</a><br><p>
                <div class="line">
                    </p>
             </div>   
            </div>
                </div>


            </div>


        <?php endwhile; ?>
    <?php else :


        if ( is_category() ) { // If this is a category archive
            printf("<h2 class='center'>Nichts gefunden in der %s category.</h2>", single_cat_title('',false));
        } else if ( is_date() ) { // If this is a date archive
            echo("<h2>Nichts gefunden unter diesem Datum.</h2>");
        } else if ( is_author() ) { // If this is a category archive
            $userdata = get_userdatabylogin(get_query_var('author_name'));
            printf("<h2 class='center'>Keine Seiten gefunden unter %s.</h2>", $userdata->display_name);
        } else {
            echo("<h2 class='center'>Nichts gefunden.</h2>");
        }
        get_search_form();


    endif;


?>


</div>
    </div>


<?php get_sidebar(); ?>


<?php get_footer(); ?>