Is it possible to load say register.php script after the buyer has completed the payment through paypal ? register.php is the script to register users on the site through a MySQL database. After payment is made and the person is directed to a page displaying the register.php information where they can create a login username and password , it needs to load the sites index page and not let the person go back and create another login for free. Is this possible? If it is how do I do it?