Windows 7 Windows 7 Atheros Wireless Driver help.

[zscrugby]

i have a atheros ar9281 wireless card and in windows 7 it works perfect with my iphone and ad hoc. but in my vista it doesnt. i realised the driver for the windows 7 it says
Driver Provider: Microsoft
Driver Date: 11/7/2008
Driver Version: 1.0.0.7
Digital Signer: Microsoft Windows

an my vista says
Driver Provider: Atheros
Driver Date: 13/01/2009
Driver Version: 7.6.1.204
Digital Signer: not digitally signed

how can i get this windows 7 driver foy my vista. also to not my vista is 64bit an win7 is 32.. cud that be why the drivers are different.