You add a new product with 3 simple fields and clickSystem Creates your secure PayPal buttonsSystem Uploads your zip fileSystem emails download link to your customer after successful purchaseSystem limits the download link to one use You can easily reactivate the link for those who miss the downloadSystem uses PayPal IPN (Instant Payment Notification) and PHP to secure sales and deliveriesSystem foils the Cyber BanditsSystem compiles your exportable customer ListThe most complicated things you do are to paste the button code to your sales page and upload the pageNo Programming or HTMLing of any kind needed.