Domain Name change help needed.

I need help fixing this wordpress site that i just tried to change the domain name on.
I used Virtualmin and did a domain name change on this site:

it was a subdomain originally named http://solartech.givemeaping.com/wordpress. i tried to change the name to http://solartech.org. it seems as if it is still in the wordpress sub directory.

I went into virtualmin and followed their instructions on how to change a domain name and then followed more instructions on how to edit my wp_config.php and functions.php. i did those edits :
in the wp_config file i added:
define(‘WP_HOME’,’http://solartech.org’);
define(‘WP_SITEURL’,’http://solartech.org’);

and did this in my functions.php :
update_option(‘siteurl’,’http://solartech.org’);
update_option(‘home’,’http://solartech.org’);

These steps didn’t quite work and virtualmin isn’t much help with wordpress issues.
Virtualmin, Apache, and PHP all appear to be working properly, and the issue i am seeing is related to WordPress

but what that issue is and how to fix it i have no idea? anyone out there know what to do?
let me know if you can help..