Changing Dolpin Url

Searching these forums may yield, say, hundreds of results on the very same subject.

Thanks, with a little more patience, I found this from deano92964:

If the host has pointed the domain to the same folder the site is currently in, then edit inc/header_inc.php and change this line.

$site['url']               = "http://your_new_domain.com/";

Then you need to manually empty the contents of the folders cache, cache_public and tmp except for any .htaccess files in those folders.

The site is currently set up on an addon domain and I would like to move it to a subdomain, so I believe I'll need to change the root as well.  Renaming the Dolphin folder to correspond to the subdomain should accomplish this as far as files are concerned.

I see the $dir['root'] folder and assume that should be renamed.  Will changing $site['url']  and $dir['root'] then clearing the cache/temp folders complete the process or is there something else I need to do?

$site['ver']               = '7.0';
$site['build']             = '2';
$site['url']               = "http://site.net/";
$admin_dir                 = "administration";
$iAdminPage                = 0;
$site['url_admin']         = "{$site['url']}$admin_dir/";

$site['mediaImages']       = "{$site['url']}media/images/";
$site['gallery']           = "{$site['url']}media/images/gallery/";
$site['flags']             = "{$site['url']}media/images/flags/";
$site['banners']           = "{$site['url']}media/images/banners/";
$site['imagesPromo']       = "{$site['url']}media/images/promo/";
$site['tmp']               = "{$site['url']}tmp/";
$site['plugins']           = "{$site['url']}plugins/";
$site['base']              = "{$site['url']}templates/base/";

$site['bugReportMail']     = "admin@site.com";

$dir['root']               = "/home/user/public_html/site.net/";
$dir['inc']                = "{$dir['root']}inc/";
$dir['profileImage']       = "{$dir['root']}media/images/profile/";

This seemed to work on everything, except now users can't sign up.  Can anyone tell me what else I need to do?

Did you clear your cache directories?