If you notice, that configure statement says "without" mssql. The mssql driver was discontinued some time ago and is no longer maintained as far as I am aware. It might be better to go with sqlsrv which is maintained by Microsoft. It should provide similar functionality. You will need to get the SQLSRV20.exe from http://www.microsoft.com/en-us/download ... x?id=20098
(Not the SQLSRV30.exe available on the same page as it is no longer compatible with your OS) and the Microsoft SQL Server 2008 Native Client from http://www.microsoft.com/en-us/download ... x?id=16177
(Not the SQL Server 2012 Native Client as it is no longer compatible with your OS). From the SQLSRV20.exe, you would put php_sqlsrv_53_ts_vc6.dll and php_pdo_sqlsrv_53_ts_vc6.dll in your PHP ext folder, add them to your PHP.ini file, and check that they appear in your phpinfo() when you start Apache.