Yeah, just got it figured out:
As you said, the ILS needs to be tuned to the proper channel,
You should be in the landing mode (bottom button of the vertical row)
The steering command (the horizontal row at the bottom) needs to be set to AWL/PCD
and your HUD and VDIs need to be selected to ILS - these are the toggles over to the right of the vertical row of buttons.
NOW it works!!
