Integrate Payment Gateway with Wordpress

We require somebody to integrate the Global Payments Global Iris Remote Payment Gateway API and associated Securecode/Verified by Visa with our Wordpress website so that our customers can pay for things on our website in a manner that is PCI-DSS compliant. :: We have a SQL table that holds a list of payments due from each of our customers. :: A PHP page loads this list for the logged-in customer into Wordpress. The table looks something like: ID Description Date Due Amount Status 112 Payment 1 of 3 23/7/2013 £100.00 Paid 164 Payment 2 of 3 25/7/2013 £100.00 Pay Now 165 Payment 1 of 3 25/7/2013 £100.00 Pay Now ::The Pay Now buttons load a payment form page that contains form fields for Card Number, Expiry Date, CVV code, Amount and PaymentID. We would like YOU to: :: Integrate the payments gateway API with the payment form page. :: Build the function to pass the payment response / authorisation code back to the SQL table using the PaymentID and update the Status to say PAID. The payment API documentation is at: [login to view URL]