allow automatically buy compiler confusion customer difficulty e-book e-books number opening password paypal program receive requesting save website

We are using e-book compiler on our website. We are looking for a program that will allow a customer to buy our e-books through PayPal, and have them automatically receive a password for opening the e-book. People seem to have difficulty requesting a password number, and this would save that confusion.

Sure, please see http://www.e-junkie.com/ej/help.sell.php and http://www.e-junkie.com/ej/help.selling-codes.php