windows w2k8 R2 64bit – 32bit ODBC for virtual center server

You must create your ODBC connection using the 32-bit ODBC program. It is not as simple as running odbcad32.exe from the run / search bar.

you must run the following to get the actual 32-bit version;

%systemdrive%\Windows\SysWoW64\Odbcad32.exe

Populate this with the details and you should see it in the virtual center installer.