I have just installed php 5.3 on windows server 2008 R2 running IIS7. phpinfo() is working fine. now I want to see if I have correctly installed the Microsoft Drivers for PHP for SQL Server. I downloaded from here: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=80E44913-24B4-4113-8807-CAAE6CF2CA05#RelatedResources I have dropped the 2 dlls (php_pdo_sqlsrv_53_nts_vc9.dll and php_sqlsrv_53_nts_vc9.dll) into the PHP\ext folder and referenced them in the php.ini I restarted the server. But when I run phpinfo() I'm not seeing any reference to sqlsrv is that normal? or should there also be a section of phpinfo() dedicated to these sqlsrv extensions? Error logging is on but there are no errors coming up in the php-errors.log referring to sqlsrv. Both files php_pdo_sqlsrv_53_nts_vc9.dll and php_sqlsrv_53_nts_vc9.dll have been added (non thread safe version for IIS), php5.dll is present in the php install folder. Thanks for any pointers.