ODBC Driver for SQL Server 2005

I can not find the driver update for SQL Server 2005 ODBC. Does anyone know where I can download it. I look in microsoft downloads not luck.The SQL Server 2000 driver will work for a fair number of cases against SQL 2005. If you have installed SQL Server 2005 locally then you will have the driver installed. The driver is called SQL Native Client(SQLNCLI) rather than SQLODBC as it was in older versions