Please run this command when register:
/usr/bin/myodbc-installer -d -a -n "MySQL ODBC 5.1 Driver" -t "DRIVER=/usr/lib/libmyodbc5-5.1.6.so;SETUP=/usr/lib/libmyodbc3S-5.1.6.so"

Please run this command when unregister:

/usr/bin/myodbc-installer -d -r -n "MySQL ODBC 5.1 Driver"