Payment Gateway Setup (Paymate)

Overview
Please follow the instructions below to activate this gateway. If the payment gateway's interface has changed or if the screenshots (where applicable) look different, please let me know.
Paymate - Setup
1: Sign up for a Paymate account to receive your merchant information.
2: Enter applicable details in your Maian Cart admin area:

Sales > Payment Methods > Paymate
Paymate - Callback url
The callback url for all operations is:

http://www.example.com/checkout/paymate.php
https://www.example.com/checkout/paymate.php (SSL)

Where 'example.com' is your own domain.
Paymate - Sandbox
At the time of testing the sandbox system was not available. Please contact Paymate.