[PEDIDO] Personalización de Wordpress

<?php get_header(); ?>
<div id="content">
    <div id="contentleft">
        <?php $postnum = 1; $adsense = 1; ?>
        <?php if (have_posts()) : while (have_posts()) : the_post(); ?>
        <h1><a href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></h1>
        <?php the_content(__('Read more'));?><div style="clear:both;"></div>
        <div class="postmeta">
            <div class="postmetaleft">
                <p><?php the_time('F j, Y'); ?> | Filed Under <?php the_category(', ') ?></p>
            </div>
            <div class="postmetaright">
                <?php comments_popup_link('Leave a Comment', '1 Comment', '% Comments'); ?>&nbsp;<?php edit_post_link('(Edit)', '', ''); ?>
            </div>
        </div>
        <!--
        <?php trackback_rdf(); ?>
        -->
        <?php if ($postnum == $adsense) { ?>
            <h1>Aqu&iacute; va tu codigo AdSense</h1>
        <?php } ?>
        <?php $postnum++; ?>
        <?php endwhile; else: ?>
        <p><?php _e('Sorry, no posts matched your criteria.'); ?></p><?php endif; ?>
        <p><?php posts_nav_link(' — ', __('&larr; Previous Page'), __('Next Page &rarr;')); ?></p>
    </div>
<?php include(TEMPLATEPATH."/r_sidebar.php");?>
</div>
<!-- The main column ends  -->
<?php get_footer(); ?>