Missing ODBC Connections?
Some programs will only use the 32 bit ODBC drivers. A 32-bit app uses a 32-bit ODBC driver even when installed on 64-bit Windows. Unfortunately on 64-bit systems, there are two views on ODBC - one is 64-bit, the other is 32-bit.
I believe that when you open the ODBC manager from control panel it shows you only the default 64-bit view. The 32-bit ODBC drivers are not shown.
To solve this go to c:\windows\SysWOW64.
Run the odbcad32.exe program. This will allow you to configure ODBC connections using 32 bit ODBC drivers.