如何在vbb论坛上加个rss频道?

navbar模板
搜索<td class="alt1" width="100%"><strong>$foruminfo[title]</strong> <span class="smallfont">$foruminfo[description]</span>

后面加&nbsp;<a href="/external.php?type=rss2&amp;forumids=$foruminfo[forumid]"><img src="/images/buttons/rss_button.gif" style="vertical-align: middle;" /></a>