Problemas con Page-Navi

[eragas]

Estimados, estoy creando un blog

http://stockindesign.com/

Tengo problemas con el Page-Navi pues no sale...lo intenté poner en el footer y no me sale tampoco

index.php

Código PHP:

  <?php get_header(); ?> 
 
    <?php if (have_posts()) : ?> 
 
        <?php while (have_posts()) : the_post(); ?> 
                              
            <div class="box post" id="post-<?php the_ID(); ?>"> 
                <div class="content"> 
                    <?php $postimageurl = get_post_meta($post->ID, 'post-img', true); if ($postimageurl) { ?> 
                    <div class="pic fl"> 
                      <a href="<?php the_permalink(); ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><img src="<?php echo $postimageurl; ?>" alt="Post Pic" width="200" height="200" /></a> 
                    </div> 
                    <?php } ?> 
                    <div class="post-title"> 
                        <h2><a href="<?php the_permalink(); ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2> 
                    </div> 
                    <!--/post-title --> 
                    <div class="post-date"><em>On <?php the_time('m.d.y'); ?>, In <?php the_category(', ') ?>, by <?php the_author_posts_link(); ?></em></div> 
                    <div class="post-excerpt"><?php the_excerpt(); ?></div> 
                    <!--/post-excerpt --> 
                </div> 
                <!--/content --> 
                <div class="hl"></div> 
                <div class="social-links"> 
                    <div class="fl"> 
                        <span><?php comments_number(0, 1, '%'); ?></span> 
                        <a href="<?php the_permalink(); ?>#comments" title="View Comments">Comments</a> 
                    </div> 
                    <div class="fr"><span><a href="<?php the_permalink(); ?>#respond" title="Leave Your Response">Leave Your Response</a></span></div> 
                    <br class="fix" /> 
                </div> 
                <!--/social-links --> 
            </div> 
            <!--/box --> 
 
        <?php endwhile; ?> 
         
        <?php if(function_exists('wp_pagenavi')) { wp_pagenavi(); } ?>   
         
        <?php /* 
        <ul> 
            <li><?php next_posts_link('&laquo; Older Entries') ?></li> 
            <li><?php previous_posts_link('Newer Entries &raquo;') ?></li> 
        </ul> 
        */ ?> 
         
    <?php else : ?> 
 
        <div class="box post"> 
          <div class="content"> 
            <div class="post-title"> 
              <h1>No Posts Were Found</h1> 
            </div> 
          </div> 
        </div> 
 
    <?php endif; ?> 
 
<?php get_sidebar(); ?> 
<noscript><a href="http://www.free-premium-wordpress-themes.com">premium wordpress themes</a></noscript> 
<?php get_footer(); ?>   

footer.php

Código PHP:

 </div> 
    <!--/columns --> 
</div> 
<!--/page --> 
<div id="page-bot"> 
    <div id="footer"> 
    <?php wp_pagenavi(); ?> 
        <div class="fl">Copyright &copy; <?php echo date("Y"); ?> &middot; <?php bloginfo('name'); ?> &middot; All rights reserved</div> 
        <div class="fr">Powered by <a href="http://www.free-premium-wordpress-themes.com">Free Premium Wordpress Themes</a></div> 
    </div> 
    <!--/footer --> 
</div> 
<!--/page-bot --> 
<?php wp_footer(); ?> 
</body> 
</html>  

Si alguien me puede ayudar sería genial

Incluso podría poner su banner en mi nuevo sitio con gusto y agradecimiento.

Saludos,