Well in desperation I edited config.php like this:

// Define the webserver and path parameters
// HTTP_SERVER is your Main webserver: eg, http://www.yourdomain.com
// HTTPS_SERVER is your Secure webserver: eg, https://www.yourdomain.com
define('HTTP_SERVER', 'http://biz75.inmotionhosting.com/~bigroc5/');
define('HTTPS_SERVER', 'https://biz75.inmotionhosting.com/~bigroc5/');

(It used to have my domain name bigrocktrees.com rather than my web host's URL)

I still can't get to my admin. As near as I can tell the store is still referencing my domain name and redirecting to bigrocktrees.com

Any experts out there have any idea?

It would create a total mess if I had to move my domain back to zencart just to fix something.

Thanks,

-John