Braintree card payments Classic ASP Integration

Integrate Braintree card payments with a legacy Classic ASP web application via aspx. The web application will create a customer order which will require online card payment using PayPal's Braintree. I can manage all the classic asp code to post relevant data to an aspx page. I need help to build the aspx page that will communicate with Braintree, handle the payment and process the response back to another classic asp script.