PHPBB Template Variables

Hi,

There is a forum image field taht allows you to assign an image against a forum. This works fine on the forum listing page but doesnt show on the main forum details page. Any idas how i can get it to show?

Also, i want to modify a template variable slightly. i,e I want to add dashes to the forum name in  template so taht instead of "FORUM NAME" it become "FORUM_NAME". I am trying to add php code to the template to do this, but cant figure out how i can assign a template variable to a php variable.
It keeps throwing an error. ( $name = {FORUM_NAME};) Any ideas how i can do this?

Thanks