Make Admin fieldset open by default when editing comment
Use hook_form_alter(). Here's an example:

    function YOUR_MODULE_form_alter(&amp;$form, &amp;$form_state, $form_id) {
      if ($form_id == 'comment_node_YOUR_CONTENT_TYPE_form') {
        $form['author']['#collapsed'] = FALSE;
      }
    }


You can place this in a custom module, or in template.php of your your front end theme.