Damian thinks its about time others joined in the forums
We have Smarty templates, kind of like HTML with variables for the content. You can read up on smarty at http://smarty.php.net
As to the closed site, you can close it via Admin->General and only allow a certain group with permission access.
In the same way, using Groups you can permission up individual sections, pages, forums, or whatever object has a key symbol.
Now searching for others to answer posts