there is an athrose AR24xx module that loads on boot time but a quick check of dmesg says the module support for the AR2425 is under development
even after configuring /etc/rc.d/rc.inet1.conf the same as BW-64 12.1
ath0 didn't show up in ifconfig -a
a quick search of
http://madwifi.org had a status report about the athrose chip sets
that said that the latest snapshot works with the AR2425
so if you have one of there cards the snapshot you need to install is "madwifi-hal-0.10.5.6-r3879-20081204.tar.gz: