The RealAuth Hosted Payment Page (HPP) is a simple and straightforward way of taking payments on your website. Using the HPP integration method, the customer will be redirected to Realex Payments secure server to enter their details and complete the transaction. Because the customer is not entering any sensitive information on your own site, HPP removes many of your PCI obligations. HPP also allows you to accept transactions from alternative payment methods/vendors. However, you will need to manually edit includes/modules/payments/realauth.php. Details are found on line 177 of the code, it is a simple change but no warrant of adding to the modules options.