another posts pagination problem

why doesn’t this work?

<ul>  <?php
if (have_posts()) :

    while (have_posts()) : the_post(); 

    $image = get_post_meta($post->ID,'image',1);
    ?>
        <li class="clearfix">
            <?php if(!empty($image)) { ?>
            <div class="imageWrapShadow">
                <img src="<?=$image?>" width="130" height="114" align="middle" />
            </div>
            <?php } ?>

            <div class="resultDesc">
                <h3><?=$post->post_title?></h3>

                <?=$post->post_excerpt?>
                <a href="<?=$post->guid?>" class="readMore">read more &raquo;</a>

            </div>
        </li>
    <?php endwhile;

wp_link_pages();
else: ?>

        Sorry, no posts matched your criteria.

<?php endif; ?>

isn’t wp_link_pages(); supposed to spit out pagination numbers?

how do i get this to give me < 1 2 3 4 >

and how do i specify how many posts to display per page?