Integrate PayPal Express with Classic ASP website

Need to integrate PayPal into my website to permit payment/refunds for a single purchase item (not utilizing a cart). Would like to pass along name of item, customer id, price, and refund policy so they are part of the PayPal history. Not sure of what gets returned, but would like to store all the transaction details in my SQL database. Ideally, I would specify each of the purchase fields as a separate field that you then incorporate into the API. And upon the return, you separate out the return items into fields that I will then send to the database. Again, this is Classic ASP.