After a co-worker asked me to install the Windows 7 beta onto his wife’s new Aspire One, I ran into a common netbook frustration. My freshly-loaded OS couldn’t find an appropriate wireless driver.
A couple of Google searches later, and I was starting to get disheartened. Finally, I came across atheros.cz.
If you’ve got an Aspire One, the file you want is on this page. The download failed with IE8 and IE7 due to the infamous gold bar, but Firefox and Chrome can get at it with no problem. Once it’s on your machine, extract the files to a folder and then open Device Manager.
To install it, don’t let Windows 7 search for drivers. Instead, choose browse and then click let me pick. Now choose have disk and browse to your new folder. Select the Atheros AR5006x from the list. You may have to reboot – prior to doing so, I was able to see access points but couldn’t connect, and the LED would not come on.
After rebooting, everything worked just fine. Good luck!