[amykhar]

Originally Posted by ataraxia

Yes

(Plus I also need to update all of my exisiting userrs, as well.)

If you require users to activate emails, the code you are looking for in register.php is here:

		if ($userinfo['coppauser'] OR ($vboptions['moderatenewmembers'] AND !$userinfo['posts']))
		{
			// put user in moderated group
			$user['usergroupid'] = 4;
		}
		if (empty($user['usergroupid']))
		{
			$user['usergroupid'] = 2; // sanity check
		}

If you are going to change their primary group, simply add:

   if ($userfield['field16']=='yes') // change this to suit you
		{
		   $user['usergroupid'] = 12;  // change this to suit you.
		}

If you want to add them to a secondary group, the code will be different, but it will go in the same area.