[Scott MacVicar]

you have to put it after

PHP Code:

if (!$servertoobusy) {
  require('./admin/sessions.php');
} else {
  $session = array();
  $bbuserinfo = array();
} 


as the bbuserinfo array isn't loaded till then.

I use

PHP Code:

if(!$bbuserinfo[userid]) {
  $welcome_msg = "Welcome Guest!";
} else {
  $welcome_msg = "Welcome back, $bbuserinfo[username]";
} 


though ig you are only going to use it on the forum index you should modify the /index.php page at the point which checks if its a registered user or guest.