Any one have any idea how to get the above mentioned dll loaded using PHP as CGI with IIS? Fatal error: Class 'PDO' not found in C:\webdev\www\WLIM\test.php on line 8 PHP Warning: PHP Startup: Unable to load dynamic library 'c:\PHP\ext\php_pdo_mssql.dll' - The specified module could not be found. in Unknown on line 0