174162 joomla content page for robots

I'm currently protecting joomla content (com_content/[login to view URL]) with a membership script but want to display the intro text to robots. The page should look like a normal joomla page, only with no body text. eg: if ($task =="view" && ($mysectionid == 5 or $mysectionid == 6) && $robots ="robot"){ diplay the robots version of the page, could be redirected to new [login to view URL] version displaying page with only intro text? } This should be simple for someone who knows joomla.