Yes, if you want to use a payment gateway that we are not already integrated with we offer custom payment providers:
http://helpdesk.smith-consulting.com/...
http://helpdesk.smith-consulting.com/...
The custom payment providers allow you to add any gateway you want by using the sample visual studio solutions we provide in the links above. If your not a programmer and want us to do the programming we would be happy to provide a quote just let me know.