Here's how I handle this

1) Create new module position called "admin" (or whatever you want)

2) Assign the moderator module to the above module position

3) Edit your site template and put this php clip where you want the module to appear:

<?php if ($my->usertype=="Super Administrator") mosLoadModules ( 'admin' ); ?>


Now only Super Administrators will be able to view any modules that are assigned to the admin module position