Lightbox with PhP

I am trying to use Lightbox with my PhP script... I am getting the image fine but for some reason its not acting as a "link" - Can someone maybe tell me why?

PHP Code:

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<table border="0" width="328" cellspacing="0" cellpadding="0" height="100%" id="table1" bordercolor="#003366">
<?php do { ?>
    <form name="picture" method="POST" action="<?php echo $_SERVER['PHP_SELF'] ?>">
    <tr>
                     <td valign="top"><p><a href="userphotos/<?php echo $row_rsPictures['Picture']; ?>" rel="lightbox" width="64" height="64" title="Tacklebox Picture">Click to Enlarge</a>
                     </p>
                     <p>&nbsp;</p></td>
                      <td valign="top"><div align="center">
                        <p><font color="#FFFFFF"><?php echo $row_rsPictures['Comments']; ?></font></p>
                        <p>&nbsp;</p>
                      </div></td>
                      <td valign="top" align="right"><?php if ($row_rsPictures['Picture'] != "") {
                  echo '<input type="submit" name="Submit" value="Delete">';
                  }
                  ?>
                        <input name="upload_id" type="hidden" value="<?php echo $row_rsPictures['upload_id']; ?>">
                      </td>                
    </tr></form><?php } while ($row_rsPictures = mysql_fetch_assoc($rsPictures)); ?>
</table>

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Could you give us a link where you have this uploaded? Or show us the produced HTML when you open the page?