Logon Script Integration for PHP Web Site

I have a php mailing script that I upload to a host. I want to integrate user registration so that I can lock it down and manage it to prevent people using it to send Spam email. I also need to integrate a limiting feature to limit the number of emails that a user cans end. Also requires an install script to install the entire script including the database creation etc ## Deliverables Requires full functionality of a User Registration Script and must be able to integrate fully with the PHP Mailing Software that I have Must have the following Features: Admin Area (manage users and also set limits as to the number of emails that a user can send per day) Logon | Register | Password Reset | Email Confirmation | Limit Number of Email Sending