Is anyone aware of a guide or instructions for setting up DNN  to use the Paypal features. 

HOST and ADMIN both have settings for one's paypal ID/PW and  one can attach a price to security roles and to other features, but exactly how does that get implemented? This is as far as I have managed to get.  To use instant Payment Notification, (IPN) paypal needs a return URL - anyone know how, in the DNN context, to set that up? How to get the return token then verify it back to paypal, then to authorize a security role or allow the person paying to instantly use the feature they are paying for, once the payment is approved?