Hi Tim,
I believe you will need to maintain 32 bit ODBC connections for 32 bit client tools. A 32 ODBC connection can be created on 64 bit OS from following location.
Navigate to C:\Windows\SysWOW64 and open odbcad32.exe. It will open 32 bit ODBC data source administrator. You can create 32 bit ODBC connections here for 32 bit client tools.
Regards,
Hrishikesh