It looks to me like the Atheros Drivers either installed a WLAN management application or need to. Is there a signal strength icon in the area near your clock (system tray)?
If so, open that and see if you see the WLAN you're wanting to connect to.
If not then you can let windows do the WLAN configuring for you by opening the services icon in the control panel, administrative tools, scrolling to the bottom and starting the Wireless Zero Configuration service. You may have to change its startup type to manual or automatic as I think the 3rd party wireless manager applications disable it.
Hope this helps