Http://download.cnet.com/802-11b-g-atheros/3000-2112_4-162108.html

or if this is not right

http://download.cnet.com/slimdrivers-free/3000-18513_4-75279940.html

note: it will find all of your outdated drivers

this is a free driver solutions

they will automatically search for and find the correct driver

hope it helps you