That extra / is most likely coming from your definitions in /includes/configure.php. For your current setup (no SSL available), the top portion of that file should look like:
Code:
/**
 * Enter the domain for your store
 * HTTP_SERVER is your Main webserver: eg-http://www.yourdomain.com
 * HTTPS_SERVER is your Secure/SSL webserver: eg-https://www.yourdomain.com
 */
define('HTTP_SERVER', 'http://fishid.com');
define('HTTPS_SERVER', 'https://fishid.com');

/**
 *  If you want to tell Zen Cart to use your HTTPS URL on sensitive pages like login and checkout, set this to 'true'. Otherwise 'false'. (Keep the quotes)
 */
define('ENABLE_SSL', 'false');

/**
 * These DIR_WS_xxxx values refer to the name of any subdirectory in which your store is located.
 * These values get added to the HTTP_CATALOG_SERVER and HTTPS_CATALOG_SERVER values to form the complete URLs to your storefront.
 * They should always start and end with a slash ... ie: '/' or '/foldername/'
 */
define('DIR_WS_CATALOG', '/zenstore5/');
define('DIR_WS_HTTPS_CATALOG', '/zenstore5/');