I had the same problem. On windows 2000 you have to configure your network card with Microsoft NetBeui
protocol. You can do this by Right clicking "My Network Places" on the desktop. Select "Right click Local Area Connection" You will see the the protocol configure for your network card. If you don't see the NetBeui protocol then Highlight "Client for Microsoft Networks and click the install button. Then select the Protocol and click add button. On the next screen you should see the NetBeui select it and click OK. Once the protocol is installed you should be able to go the My Network Places by clicking on the icon and then click on "Computer near me" and the windows xp should appear.
Hope this works for you.
Good luck,
Michal