Create connection to paypal web payments pro api with checkout form to collect credit card info and all required info for paypal. Show total amount due as variable on checkout form as I will pass this from other pages. Show status of payment from paypal and order number on thanks page after submitting to paypal.
Create in Coldfusion credit card and address page with total as variable and then submit to paypal for authorization and show result on page. I will provide paypal key to use to conenct to account.