"Enable Back Course A LOC Antenna always radiates a back course beam, although it may be shielded in some rare cases. If you are approaching on a back course the ILS gauge needle will swing in the opposite direction from a normal front course approach, unless your gauge automatically corrects for this. Note that a back course approach is not the same as having an ILS at both ends of the runway. At many airports a back course approach is not allowed. A back course will never have a GP. You do not have to disable a back course in FS, even if you have an ILS on the same frequency at both ends of the runway.
so it appears it's doable and should work.
i added an ILS to both ends of runway 6/24 but it won't show up in FS9. Here's the screens:

ABOVE: AF2 SHOWS BOTH ILSs

ABOVE: FS9 SHOWS ONLY ONE ILS RWY24

ABOVE: FS9 SHOWS SAME FREQ BOTH ENDS (BUT THERE'S ACTUALLY ONLY A FRONT COURSE ON Rwy 24
thanks for any help
bill