If you are installing MySQL ODBC Driver and encounter the following error:
Error 1918. Error installing ODBC driver MySQL ODBC 5.1 Driver, ODBC error 13: The setup routines for the MySQL ODBC 5.1 Driver could not be loaded due to system error code 126: The specified module could not be found. ...\myodbc5S.dll).. Verify...
Then you will need to install the Microsoft Visual C++ 2010 Redistributable Package (select the appropriate one for your OS architecture below):
After installing that, then re-attempt installing the MySQL ODBC connector, and things should work smoothly.
Hope this helps.