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Hi everyone , Our company have a nt4.0 server with sp4 and because of security , nt server have Netbeui and tcp/ip with strange ip to communicate with particular computers . Computers with 98 win2000 ,xp (home or pro) with sp1 can communicate with this nt server by Netbeui but xp (home or pro) with sp2 can't . In neighborhood , Xp sp2 even can't find NT server by Netbeui . All client computer set ip in 192.168.1.xxx and Nt server with ip "140.x.x.x" . Please help me thanks .