It says Windows 2000/XP, but I think NT4 and Windows 2003 should work fine. This file was in the "drivers>keyboard" folder on one of the CD's that came with the machine. The keyboard is really an OEM from Chicony, so it should work for theirs, too. There was a readme file with it, it was small so I'll just paste it in this message:
Contents:
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PS/2 Drivers for eMachines Multimedia Keyboard for Windows 2000/XP
Requirements:
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Microsoft Windows 2000/XP
1.5 MB Free Hard disk Space
USB or PS/2 Port depending on model
Installation:
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PLEASE NOTE: The keyboard must be connected to the PC for proper installation of the driver
To begin installation, double-click on the setup.exe file in the director
y to begin the installation. On the next screen, click the [Next] button to proceed.
At the conclusion of the installation, you will be asked to reboot the computer. Select "Yes, I will restart my computer now" option then click the [Finish] button to restart the PC.
Verification of installation:
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The PC will display an on-screen text confirmation in the lower right-hand area of the screen whenever one of the Multimedia buttons is pressed.
Uninstallation:
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Open the "Add or remove Programs" option in the Control Panel and select the item named "Multimedia Keyboard Driver Ver 1.0".
Click the [Select/Remove] button to begin. A message box will appear asking "Do you want to remove the selected application and all its components?"
Click [OK] to continue.
Click [Finish] to complete the process.