Thank you for contacting Intel.
We would like to inform you that interactive support, software and driver updates for Windows* 2000 Operating System has been discontinued. However, you may try the driver below:
Intel® PRO Network Connections LAN Driver
File name: PRO2KXP.exe
Version: 11.2 (Latest)
Size: 11.3 MB
Supported Operating Systems: Windows 2000 *, Windows XP Home Edition*, Windows XP Media Center Edition*, Windows XP Professional*
Download link: Intel® Download Center
Hope this is helpful.