I just finished building a new 2003 server, but I cannot map to the server from a win 2000 pro machine. I was having the same problem with win xp, but I disabled network access control using IEEE 802.1X and I can map those machines fine. However, win 2000 pro will not map and I have done the same procedure. Can anyone give me any ideas why this is happening with win 2000 pro and a fix if possible?