Hi, I use windows server 2003 +IIS+ php 4.3.1. Since from times to times I got an annoying error/bug with my php scripts (the palliative was to restart VPS each times the problem occurs); I thought that using the FASTCGI dll would improve stability of the system. So I've done my best to install FASTCGI. (By the way, why informations to install this dll are lacking on official website www.fastcgi.com ?) Just after the install of my dll (i.e last install step was restarting the VPS), I've checked some very basic script (i.e echo "hello world"; ) and they worked. When I use php_info(), it shows : Server API: CGI/FastCGI , so I assume that FASTCGI is really installed.(I'm not dreaming...) Now where I have a problem: when I launch a php script from the ROOT directory, the file_exists function fails to detect, truly existent files (I use relative paths) Also file read/write operations fails (i.e fopen("example.htm", "w") ) When I launch a script from a subfolder (with correct permissions set) everything seems to work fine: file_exist function work, and also read/write operations. So I don't know why it doesn't work as expected in the Root directory. This problem appeared after the installation of that FASTCGI dll (everything worked fine before, if we ignore system instability problem). Please Help me to fix this. I have a joomla based website that doesn't work because of this. I don't want to move it in a subfolder. Thanks in advance.