I have installed php5.2 on IIS 5.1, windows XP, with FastCGI. I believe all IUSER permissions set for c:\php\phpini and c:\php\php-cgi.ini. /Software/PHP Register key modified to include string IniFilePath=C:\php, environment variable path and PHPRC path set to C:\php, restarted IIS several times. Still, phpinfo() configuration path points to C:\windows, and loaded configuration = NONE. Anyone help? This is stopping phpmyadmin from working - error is: "Cannot load mysql extension. Please check your PHP configuration". Hope someone can help. Thanks