Hi All,

A client of mine is using Sterling Payments (http://www.sterlingpayment.com/) as their gateway and I do not see a payment module listed in the downloads section for this company.

Since I am going to have to manipulate the API, I figured it would probably be best just to create a custom module for ZC that all can use. Is there a resource (article, thread, doc, etc.) that describes the necessary steps/considerations to creating a custom module for ZC?