97037 Secure PHP login script

I need a secure login script that I can protect my php script with. Script is not created yet and will use mssql. - I'll need different access levels and the login must be very secure. Secure as use Encrypted cookies and/or sessions to authenticate users when logging in. - Must encrpyt passwords via md5+salt or any other secure methods you might recommend. - Need an admin page for highest level access, so that I can view login logs, create/delete/edit users, info, and permissions. - Must use up to date methods protecting against Sql injection and and XSS vulnerablilites. - Require to log any failed logins - Code must be clean and well commented. - Must filter/validate any incoming variables such as $_POST, $_GET , $_COOKIES - Make use of functions for validation and authentication, aswell as protecting certain pages for the different access levels. - Secure Login and Registration form If you feel you can meet all my requirements please pm me with your msn contact information and price.