Have been messing around with create_ap trying to get a access point working with an old laptop. It has got far better since I last used it and can do a raft setups using it.
You can do a quick check if your wifi card supports it by viewing output of
ip list | grep AP
And it is in ArchAssault repo ;-)
Go on check it out!
Comments, suggestions, donations please feel free to contact me mrgreen(at)archbang(dot)org