Import the stick set from within your Flightstick Control Panel in your "Control Panels" folder.
Then, merely select "Absolute Zero" to fly.
When in the game, select the "Extended Mac Keyboard" key set from within "Visor Controls" to ensure that all flightstick buttons work properly.
If you'd like to change settings, just make sure that your key set within the game reflects the changes you make in your Flightstick Pro control panel.