ASP.NET + Paypal Website Payments PRO / IPN System

I'm looking to integrate into my ASP.NET website the Paypal Payments using Website Payments Pro / IPN system. Users should have the ability to add item to cart and checkout. There are only 5 items available to purchase. Also I would like if possible for the user to be added to a MS SQL table if the transaction is successful. I already have the database connectivity in place. Thanks!