Everything works fine, if I disable SSL. I've created the certificate, modified configure.php accordingly. There is an SSL folder in the root of my web site on the server, which has the certificate in it. Do I need to point the catalog there somehow? Or move some or all of the files in there?

Catalog/Includes/Configure.php

<?php
/*
osCommerce, Open Source E-Commerce Solutions
http://www.oscommerce.com

Copyright (c) 2003 osCommerce

Released under the GNU General Public License
*/

// Define the webserver and path parameters
// * DIR_FS_* = Filesystem directories (local/physical)
// * DIR_WS_* = Webserver directories (virtual/URL)
define('HTTP_SERVER', 'http://www.excesscomputers.ca'); // eg, http://localhost - should not be empty for productive servers
define('HTTPS_SERVER', 'https://www.excesscomputers.ca'); // eg, https://localhost - should not be empty for productive servers
define('ENABLE_SSL', true); // secure webserver for checkout procedure?
define('HTTP_COOKIE_DOMAIN', 'excesscomputers.ca');
define('HTTPS_COOKIE_DOMAIN', 'excesscomputers.ca');
define('HTTP_COOKIE_PATH', '/catalog/');
define('HTTPS_COOKIE_PATH', '/catalog/');
define('DIR_WS_HTTP_CATALOG', '/catalog/');
define('DIR_WS_HTTPS_CATALOG', '/catalog/');
define('DIR_WS_IMAGES', 'images/');
define('DIR_WS_ICONS', DIR_WS_IMAGES . 'icons/');
define('DIR_WS_INCLUDES', 'includes/');
define('DIR_WS_BOXES', DIR_WS_INCLUDES . 'boxes/');
define('DIR_WS_FUNCTIONS', DIR_WS_INCLUDES . 'functions/');
define('DIR_WS_CLASSES', DIR_WS_INCLUDES . 'classes/');
define('DIR_WS_MODULES', DIR_WS_INCLUDES . 'modules/');
define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'languages/');

define('DIR_WS_DOWNLOAD_PUBLIC', 'pub/');
define('DIR_FS_CATALOG', '/home/excessco/public_html/catalog/');
define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . 'download/');
define('DIR_FS_DOWNLOAD_PUBLIC', DIR_FS_CATALOG . 'pub/');

// define our database connection
define('DB_SERVER', 'localhost'); // eg, localhost - should not be empty for productive servers
define('DB_SERVER_USERNAME', 'user');
define('DB_SERVER_PASSWORD', 'pass');
define('DB_DATABASE', 'db');
define('USE_PCONNECT', 'false'); // use persistent connections?
define('STORE_SESSIONS', 'mysql'); // leave empty '' for default handler or set to 'mysql'
?>


Catalog/Admin/Includes/Configure.php

<?php
/*
osCommerce, Open Source E-Commerce Solutions
http://www.oscommerce.com

Copyright (c) 2003 osCommerce

Released under the GNU General Public License
*/

// Define the webserver and path parameters
// * DIR_FS_* = Filesystem directories (local/physical)
// * DIR_WS_* = Webserver directories (virtual/URL)
define('HTTP_SERVER', 'http://www.excesscomputers.ca'); // eg, http://localhost - should not be empty for productive servers
define('HTTP_CATALOG_SERVER', 'http://www.excesscomputers.ca');
define('HTTPS_CATALOG_SERVER', 'https://www.excesscomputers.ca');
define('ENABLE_SSL_CATALOG', 'true'); // secure webserver for catalog module
define('DIR_FS_DOCUMENT_ROOT', '/home/excessco/public_html/catalog/'); // where the pages are located on the server
define('DIR_WS_ADMIN', '/catalog/admin/'); // absolute path required
define('DIR_FS_ADMIN', '/home/excessco/public_html/catalog/admin/'); // absolute pate required
define('DIR_WS_CATALOG', '/catalog/'); // absolute path required
define('DIR_FS_CATALOG', '/home/excessco/public_html/catalog/'); // absolute path required
define('DIR_WS_IMAGES', 'images/');
define('DIR_WS_ICONS', DIR_WS_IMAGES . 'icons/');
define('DIR_WS_CATALOG_IMAGES', DIR_WS_CATALOG . 'images/');
define('DIR_WS_INCLUDES', 'includes/');
define('DIR_WS_BOXES', DIR_WS_INCLUDES . 'boxes/');
define('DIR_WS_FUNCTIONS', DIR_WS_INCLUDES . 'functions/');
define('DIR_WS_CLASSES', DIR_WS_INCLUDES . 'classes/');
define('DIR_WS_MODULES', DIR_WS_INCLUDES . 'modules/');
define('DIR_WS_LANGUAGES', DIR_WS_INCLUDES . 'languages/');
define('DIR_WS_CATALOG_LANGUAGES', DIR_WS_CATALOG . 'includes/languages/');
define('DIR_FS_CATALOG_LANGUAGES', DIR_FS_CATALOG . 'includes/languages/');
define('DIR_FS_CATALOG_IMAGES', DIR_FS_CATALOG . 'images/');
define('DIR_FS_CATALOG_MODULES', DIR_FS_CATALOG . 'includes/modules/');
define('DIR_FS_BACKUP', DIR_FS_ADMIN . 'backups/');

// define our database connection
define('DB_SERVER', 'server'); // eg, localhost - should not be empty for productive servers
define('DB_SERVER_USERNAME', 'user');
define('DB_SERVER_PASSWORD', 'pass');
define('DB_DATABASE', 'db');
define('USE_PCONNECT', 'false'); // use persisstent connections?
define('STORE_SESSIONS', 'mysql'); // leave empty '' for default handler or set to 'mysql'
?>


When you click on account, or checkout, it asks about the security certificate and if you click proceed, it goes to page not found.

Any help would be appreciated.

http://www.excesscomputers.ca/catalog

Erin