Microsoft ODBC Driver for SQL Server (x86) .
Select the "Windows (x86, 32-bit), MSI Installer" to match your Windows 7 architecture. Oracle : Direct Download: Oracle Instant Client (32-bit). free download odbc driver for windows 7 32 bit
If you are using Windows 7, ensure you also have the latest Visual C++ Redistributable installed, as it is a required prerequisite for the driver to function. MySQL: Direct Download: MySQL Connector/ODBC . Microsoft ODBC Driver for SQL Server (x86)