As requested, here is the script in action:

http://www.theddn.com/login_script/index.php

There are no "administration parts" to this script. However, you can log in as an AdminUser and gain access to an admin section. What you put in the admin section is up to you though. If you need me to write some admin tools (user editing, user deleting, statistics, etc), I do php work for $30 /hr and would be glad to help you add on. This script took me a few hours, but I figured I can make it worth my time by selling a bunch for almost nothing ($25). And, so far so good!

Let me stress again that this is a basic login/registration script. It was made for you to easily insert into your existing website to bring more functionality to your site.

Some Other Features of the Script
-Ensures Username is not already taken during registration
-Ensures Email address is not already taken during registration
-Ensures passwords match during registration
-Logout Page
-Standard, Elite, and Admin Levels (you put the content on the different levels!)

Take a look at the demo link I posted, and feel free to ask if you have any more questions.