do you have an "unsecure" setup? or do you have encryption set? mac-filtering maybe?
i have the same card before. i has an atheros chipset (so you'd see it as athX)
and it works out of the box.
to connect to an unsecured network, i have the ff in /etc/networks/interfaces:
iface ath0 inet dhcp
during bootup it should automatically connect to NetHome network.