note 31001 added to function.header

Hello there....... Could someone please explain to me why this wouldn't work: header("Location: $PHP_SELF?UID=$UID"); exit; Testing the file on my web hosting server works but when I test it on my client's server, it doesn't. What happens is that when loaded onto my clients web hosting server it just takes forever to load and then either says it can't find the file or there is a error in the CGI application. And I just can't see why especially when it works prefectly on my web hosting server??? Any ideas/suggestions would be extremely grateful!!! Thanks so much, Vick -- http://www.php.net/manual/en/function.header.php http://master.php.net/manage/user-notes.php?action=edit+31001 http://master.php.net/manage/user-notes.php?action=delete+31001 http://master.php.net/manage/user-notes.php?action=reject+31001