Have you tried downloading the Win2K drivers from Atheros?
Problem is that Atheros does not offer drivers for its own Ethernet. Instead it offers a software called DriverInstaller.exe. When I downloaded it using another computer and then copied it to the computer via a USB disk. When I activated this software, it startrd to try to access Internet to download another software. Without a working Ethernet, the computer cannot access Internet and crashed. Stupid situation. Actually DriverInstaller wanted the software called Microsoft Frame V2.0. So I downloaded the software (dotnetfx.exe) from Microsoft using another computer and installed the Frame work in the computer and then tried the DriversInstaller again, but, alas, it start to try to download ignoring the fact that it was already installed.So I'm stuck.