Domain change

I recently set up the 3 beta to test on an old domain on a different host. Since everything worked out I’m intending on moving my site to WP3 on this new host.

I would like to use the current installation, but I don’t see a way to change the domain on the main network site.

Can I change the domain just by editing the wp-config.php entry of:

define( 'DOMAIN_CURRENT_SITE', 'www.olddomain.org' );
define( 'PATH_CURRENT_SITE', '/wp3/' );

to be

define( 'DOMAIN_CURRENT_SITE', 'www.newdomain.org' );
define( 'PATH_CURRENT_SITE', '/wp3/' );

to change it for the network?