dans themes/default/prepend.php :

// start a session because dcChat need it
if (session_id() == "") {
  require dirname(__FILE__).'/../../inc/session.php';
}

dans themes/default/template.php :

apres

  <?php dcPostTrackbackAutoDiscovery(); ?>

inserez

        <?php if ($mode == 'post') dcChat::printJavascript(); ?>
        <?php if ($mode == 'post') dcChat::printStyle(); ?>

dans themes/default/post.php :

avant

<div id="trackbacks">

ajoutez:

<div id="chat">
  <h3 id="ch">Chat</h3>
  <?php dcChat::printChat(); ?>
</div>