admin for paypal ipn style http post pass through

We're looking for a pre-made admin on any type of platform, joomla, ecommerce, 3dcart, magento, whatever your heart desires that can receive and properly display our customer information that are processed using ejunkie. You can see the intructions here: [login to view URL] . We would like to be able to see all customer data fields, email them status updates, shipping updates, and much more. Perhaps some custom requirements are needed. Please message us with your suggestions and most of all examples with login/passwords that we can enter and look at.