agony

Hello ! I recently installed php with fastcgi (and mysql) on iis 7. I have a website with a directory at c:\inetpub\wwwroot, when i enter localhost this directory is accessed and the website displayed properly. However i also have a dyndns adress pointing to my ip, when i enter this dyndns adress, all i get is a phpinfo page. Why ? please help me solve this, i am really confused right now :confused: