Dual network problem - trouble seeing B/G network in farthest location

Question

My iPhone and MacBook Pro cannot see the B/G network in the room farthest from the main base station, even though there is an AEX in the room set up to provide internet and Airtunes.
My set up is:
N network - 2 AEBSn base stations
B/G network - 1 AEBS (connected by ethernet to the main AEBSn) and 3 AEX's
I tried to follow the directions for setting up a dual network and think I have done it correctly. But even though I receive a strong N-network signal in the farthest room, I cannot see the B/G network at all, it just seems to disappear.
Any help would be most appreciated.

Answer 1

Thanks HPM2.
I guess third times a charm. The hard reset of the AEBS finally worked and Airport Utility recognized it and I set it up to join my existing network as a WDS remote.
It works well, but every time I try to access the newly added AEBS b/g via Airport Utility, I get asked for my keychain access and then for the AEBS b/g password. I established the AEBS password during the Airport Utility setup, but now it is not recognized and is not even in my Keychain Access Utility. I selected the "remember keychain" checkbox during the set up too.
Any ideas on this keychain issue?
Thanks again,
Mr. Hand