To create a sub-template effect is really quite simple.

Instead of using a standard index.php file as your index you may use an index.php whch routes the user to the template you wish them to use. As an example suppose the 'published' template is peekime. The first thing to do is rename it's index.php file to index1.php then place the following in a file you will name 'index.php,' in the peeklime directory.

All un-registered users will see the peeklime template, while logged in users will be routed to a different template depending on the material to be displayed.