Build API interface in ASP CLASSIC (VB Script) for PayPal Pro

We are integrating PayPal Pro into an existing ASP Classic custom cart and need someone to do the API interface ONLY. We are only looking for you to do the API work as we will lay out - we will then integrate into the existing cart - you won't have to mess with that part. The process of the cart system is that we have a "checkout" page where we collect all the name - address - etc. info - then the person selects which payment method they wish. At that time the form posts to a page where all the data is pulled and added to the database - will have the order total and cart ID as well. Then based on payment method selected they will be redirected to a new page which is where your section starts. You will build an ASP Classic (vb script) (NOT .NET!!!) page that will display the payment form through the PayPal Pro API. Any information that you will need will be available through our data - but for your test purpose - you can just apply sample data - for example - firstname = "Joe" - ordertotal = "32.44" - etc. One data item we need to travel through the process and come out on resulting pages is the cartID so we can match up the order. When the user enters their payment info and submits - your page will process the transaction through PayPal Pro and get the result of success or fail - and based on that result will redirect to appropriate page with whatever information we can get back from the interface and the CartID Number. At that point your part is completed and we will finish out the transaction within our cart system.