on the 2000 box right click on network neighbourhood, if your network card is functioning you should have to icons :
1. make a new connection.
2. local area network.
If u have the local area network then:
right click it and install the components u need ,
tcp/ip or netbeui
and file shareing.
If u dont then :
right click my computer, go to hardware tab and click device manager, and check your network card.