[CentOS] wifi card shows in device manager , but cant configure wifi

hi ,

i just finished installing Cent OS 5.2 x64 on my thankpad
my hardware list shows the following

Atheros Communications Inc.
AR5212 802.11abg NIC

but when im trying to set up wireless network i cannot find the appropriate
wifi card.. when adding wifi connection
pls help

many thanks,
Sumit.
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