NetGear WG311TNA works with madwifi for me, mate.
00:0d.0 Ethernet controller: Atheros Communications, Inc. AR5212 802.11abg NIC (rev 01)
It's next to impossible to determine the chipset before you
stick the card into a box and run "lspci" because the manufacturers
change chipsets on the same model of card, etc.
Google <Linux> is your friend, too.