В INDEX.PHP

НАЙТИ

// Allow cron
if (IS_AM)
{
	if (@file_exists(CRON_RUNNING))
	{
		if (@file_exists(CRON_ALLOWED))
		{
			unlink (CRON_ALLOWED);
		}
		rename(CRON_RUNNING, CRON_ALLOWED);
	}
}

ПОСЛЕ ДОБАВИТЬ

if($bb_cfg['activ_user'])
{
if (!$activ_user = CACHE('bb_cache')->get('activ_user'))
{
    $activ_user = array();
    $sql = DB()->fetch_rowset(" SELECT username, user_id,user_posts,user_avatar,user_avatar_type,user_opt
        FROM ". BB_USERS ."
        WHERE user_id NOT IN(". EXCLUDED_USERS_CSV .")
        ORDER BY user_posts DESC
        LIMIT 12 ");
    CACHE('bb_cache')->set('activ_user', $sql, 300);
}
    foreach($activ_user as $row)
    {
        $template->assign_block_vars('activ_user', array(
            'AVA'     => get_avatar($row['user_avatar'], $row['user_avatar_type'], !bf($row['user_opt'], 'user_opt', 'allow_avatar'),36, 36),
            'POSTS'   => $row['user_posts'],
            'USER'    => $row['username'],
            'USER_ID' => $row['user_id'],
        ));
    }
}

if($bb_cfg['reg_user'])
{
if (!$reg_user = CACHE('bb_cache')->get('reg_user'))
{
    $reg_user = DB()->fetch_rowset(" SELECT username, user_id,user_regdate,user_avatar,user_avatar_type,user_opt
        FROM ". BB_USERS ." 
        WHERE user_id NOT IN(". EXCLUDED_USERS_CSV .") 
        ORDER BY user_regdate DESC 
        LIMIT 12 ");
    CACHE('bb_cache')->set('reg_user', $reg_user, 300);
}
    foreach($reg_user as $row)
    {
        $template->assign_block_vars('reg_user', array(
            'AVA'     => get_avatar($row['user_avatar'], $row['user_avatar_type'], !bf($row['user_opt'], 'user_opt', 'allow_avatar'),36, 36),
            'DATE'    => bb_date($row['user_regdate'], 'd-M-y H:i', 'false'),
            'USER'    => $row['username'],
            'USER_ID' => $row['user_id'],
        ));
    }
}


В PAGE_HEADER.TPL

НАЙТИ
	<?php if (!empty($bb_cfg['sidebar1_static_content_path'])) include($bb_cfg['sidebar1_static_content_path']); ?>
	<img width="210" class="spacer" src="{SPACER}" alt="" />

ПЕРЕД ВСТАВИТЬ
	
<!-- IF $bb_cfg['activ_user'] -->
  <h3>Активные пользователи</h3>
    <div class="top_users">
  <!-- BEGIN activ_user -->
        <span>
            <a class="top_users_img" href="profile.php?mode=viewprofile&amp;u={activ_user.USER_ID}" title="{activ_user.USER}, Сообщений: {activ_user.POSTS}">{activ_user.AVA}</a>
        </span>
  <!-- END activ_user -->
    </div>
<!-- ENDIF -->

<!-- IF $bb_cfg['reg_user'] -->
  <h3>Новые пользователи</h3>
    <div class="top_users">
  <!-- BEGIN reg_user -->
        <span>
            <a class="top_users_img" href="profile.php?mode=viewprofile&amp;u={reg_user.USER_ID}" title="{reg_user.USER}, Регистрация: {reg_user.DATE}">{reg_user.AVA}</a>
        </span>
  <!-- END reg_user -->
    </div>
<!-- ENDIF -->

В CONFIG.PHP

$bb_cfg['activ_user'] = true;
$bb_cfg['reg_user'] = true;


В MAIN.CSS

.top_users_img img {
    background-color: #FCFCFF;
    border: 1px solid #C4CAD4;
    border-radius: 4px 4px 4px 4px;
    padding: 2px;
}