you would need to create the data assist pages manually. you could create them in the admin CMS directory.
the code to protect the admin cms page is:
[/php]<?php require_once( "../WA_Globals/WA_Globals.php" ); ?>
<?php require_once('../Connections/PowerCMSConnection.php'); ?>
<?php require_once( "../WA_SecurityAssist/Helper_PHP.php" ); ?>
you could add that at the beginning of the new pages you create.