Меняем ссылку атачмента на картинку

$link = "<span id="attachment"><a href="{$config['http_home_url']}engine/download.php?id={$row['id']}" >{$row['name']}</a> [{$size}] ({$lang['att_dcount']} {$row['dcount']})</span>";
      else
        $link = "<span id="attachment"><a href="{$config['http_home_url']}engine/download.php?id={$row['id']}" >{$row['name']}</a> [{$size}]</span>";

$link = "<center><span id="attach"><a $link_open href="{$config['http_home_url']}engine/download.php?id={$row['id']}
"  onmouseover="showhint('Нажмите для скачивания {$row['name']}!', this, event)";><img src="/templates/[ВАШ ШАБЛОН/images/download.jpg" border="0"></a></span><br>
<div class="attac"><font color="#636363"><b>Размер:</b></font> {$size}<br>
<font color="#636363"><b>Скачиваний:</b></font> {$row['dcount']} </div></center>";
      else
        $link = "<span id="attachment"><a href="{$config['http_home_url']}engine/download.php?id={$row['id']}" >{$row['name']}</a> [{$size}]</span>";

.attac{
padding-top:3px;
position:fixed center;
}