Hi! I installed PHP 4 on Windows 2003 Enterprise to test it. Some functions cannot work, example $REMOTE_ADDR, $HTTP_ACCEPT_LANGUAGE, etc. All functions get back an error: Notice: Undefined variable: HTTP_ACCEPT_LANGUAGE in C:\Inetpub\wwwroot\terrachat_hu\detectlang.php on line 16 I have not found information about this symptom. I don't know how can solve it. I think this functions posted by the browser. Why can not get this informations the PHP? I installed the PHP 5 and the problem has not solved yet. Have you got any idea? JZO