PHP environment variables not working

Hello everyone, I just upgraded from php3 to php4 installed on NT4 on IIS4. the new php_info under php4 still displays the same environment variables (AUTH_USER, HTTP_HOST, etc.) as php3 did, but they don't work in my scripts, any reasons why?? Thanks a heap for your help, b ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com