This is a payment gateway for opencart that adds support for eCheck.net by Authorize.net for processing eChecks / online bank transfers. This is compatible wtih OpenCart 1.5.1.3 through 1.5.5.1.
Upload the contents of the repository to the root of your website. No files will be overwritten.
A new payment method called "eCheck.net by Authorize.net (AIM) will appear under Extensions->Payments once you have uploaded the files.
Click Install, then Edit, and enter your Authorize.net Login ID, Transaction Key and MD5 hash (optional.) You will also need to set the status to enable and set the appropraite transaction server settings to begin using the extension.