I just installed acx100 yesterday in order to try out a friend's wireless AP. I don't use the card often but I got the latest drivers from CVS and I'm very impressed with the progress - no more messing with custom scripts to get it going, and so on.
Anyway, I shouldn't go on about my experiences but rather post what I intended to: You can download the wireless-tools package
as source and build it. It shouldn't be a problem if you have managed to build the driver itself.
Good luck!
Håkan