[grant.hayman]

I did this (got the code from this forum somwhere I think so cant take credit)

find and comment this block

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

and add this below

// Send the User to another page on registration
    $vbulletin->url = "http://yoururl_here". $vbulletin->session->vars['sessionurl']; 
         
    eval(print_standard_redirect('registration_complete'));