Unsecured Checkout

[dejavu]

My checkout shows http, not https. So, it looks like my checkout in unsecured.

My admin/includes/configure.php:

  define('HTTP_SERVER', 'http://thewonderofchrist.com');
  define('HTTPS_SERVER', 'https://thewonderofchrist.com');
  define('HTTP_CATALOG_SERVER', 'http://thewonderofchrist.com');
  define('HTTPS_CATALOG_SERVER', 'https://thewonderofchrist.com'); 
  define('ENABLE_SSL_CATALOG', 'true');
  define('ENABLE_SSL_ADMIN', 'false');

My includes/configure.php:

define('HTTP_SERVER', 'http://thewonderofchrist.com');
define('HTTPS_SERVER', 'https://thewonderofchrist.com');
define('ENABLE_SSL', 'true');

I've tried various combinations with www and without. With some or all entries at www, I could not properly write to the database in Admin.

Advice?