1. Click on "My Computer" on the desktop and then right click mouse button.
2. Click on "Properties".
3. Click on "Hardware" in the tab menu.
4. Click on "Device Manager" button.
5. Click on "Other devices".
6. Click on "Ethernet Controller" then right click mouse button.
7. Click on "Properties".
8. Click on "Driver" tab menu.
9. Click on "Update Driver..."
10. Check radio button to "Install from a list or sepcific lication (Advanced)" then click "Next".
11. Check radio button to "Don't search. I will choose the driver to install." then click "Next".
12. Click on "Have Disk..." then browse to your Windows 2003 driver location then click on "OK" button.
13. Click on "DGE-560T Gigabit PCI Express Ethernet Adapter" then click "Next" button.
14. Driver install in progress...
15. "Completing the hardware Update Wizard" means you have installed driver successfully.
16. Click "Finish" to finish driver installation.