echo-inc payment module for Zen 1.38?

[securecyber]

I have spent some time trying to find the payment module for Echo-Inc merchant since they have mentioned that their system is compatible with Zen Cart. I could not locate the answer as well as I did not find the module in the download area for v.1.38 of Zen (the latest security patch was applied).

I am running out of time to setup the shop and my corporate and international customers are sick and tired to use the PayPal Payment Gateway, especially with American Express credit card.
If someone know where to find it (and any information on how to setup properly), I would really appreciate. In return, I have something you might like to have.
Thank you in advance for taking time to point me to the right place.

[kobra]

It looks as though one must have Quick Books to enable this

[securecyber]

Quick Books? What do you mean? Quick Books payment module, program, or something else?

[kobra]

Intuit aquired Echo-inc and their site appears broken
http://www.echo-inc.com/

Explanation here
http://payments.intuit.com/products/...processing.jsp