This payment module is intended for the MIGS (MasterCard Internet Gateway Service) for what they call the "3rd party" integration method, or the Virtual Payment Client (VPC) which is the interface that processes the payment on their secure server, a bit like 2checkout. This service is used by more than 400 banks arround the World.
I had a very hard time finding this module & fixing it because people call it by the name of the bank that is using it, instead of calling it by its real name: MIGS.
The code was developed by T-Rex Art (http://www.trexart.com.au/) in August 2007, following the model of the 2checkout module, for what the author calls the "ANZ eGate" payment gateway (http://www.ubercart.org/comment/143/Re-Payment-Gateway-redirect-back-site). But it was not working with the latest version of Drupal+Ubertcart. So I applied the little fix suggested here by Ryan in October 2007 (http://www.ubercart.org/comment/3408/Re-issues) & it worked just fine with the latest version of Drupal+Ubercart.
NOTE: There is a module for this same gateway for the Drupal E-commerce module (http://drupal.org/project/commweb) but people name it by the bank that is using it (CommWeb, ANZ eGate, Bendigo...) so it generates confusion as if these were all different gateways requiring different payment modules, making it almost impossible to find when searching with keywords.
TODO: The .pot language file is not inculded in the package.
Note: The code on this page was out of date. For the current download, please to the the project page on Drupal.org. --Admin