Running ZC 1.3.9h. Have downloaded the eProcessingNetwork TDBE and the bubble is green: Processing. On 2/25/12 got SSL Certificate working, made the changes to configure.php, and can access Zen Cart:
/includes/configure.php
define('HTTP_SERVER', 'http://www.a1armorer.com');
define('HTTPS_SERVER', 'https://www.a1armorer.com');

define('ENABLE_SSL', 'true');

/adminurrhtcqq/includes/configure.php
define('HTTP_SERVER', 'http://www.a1armorer.com');
define('HTTPS_SERVER', 'https://www.a1armorer.com');
define('HTTP_CATALOG_SERVER', 'http://www.a1armorer.com');
define('HTTPS_CATALOG_SERVER', 'https://www.a1armorer.com');

define('ENABLE_SSL_CATALOG', 'true');
define('ENABLE_SSL_ADMIN', 'true');

When I select a product and click on Go To Checkout, I receive the message:
There's a problem with this website's security certificate.
Did I botch the PHP mods?