Use the 32-bit ODBC administrator (odbcad32.exe) instead of
the 64-bit version, which is located in the %systemroot%\SysWOW64 folder
to create and configure 32-bit datasources.
Click Start > Run on your desktop.
In the Open box, enter:%systemroot%\SysWOW64\odbcad32.
Click OK.
Note: The 64-bit version of Microsoft ODBC Data Source Administrator must be closed
before you can open the 32-bit version. An attempt to execute the 32-bit version
while the 64-bit version is running causes the 64-bit version to continue
processing and prevents the 32-bit version from opening for administration.