Fetching A Template Instead Of Phrase

[paul41598]

Upon new registration completion, a member is notifyed that their new account is ready to go, blah blah (like the pic below)

I think this uses a phrase though called registration_complete.

Is there a way to grab a template instead? I wanna include more post back information. I found this in registration.php which I think I'd change

PHP Code:

eval(standard_error(fetch_error('registration_complete', $userinfo['username'], $vbulletin->session->vars['sessionurl'], $vbulletin->options['bburl'] . '/' . $vbulletin->options['forumhome'] . '.php'), '', false)); 


Any ideas?