Windows NT 4.0 only provide the command "telnet" to telnet other computer such as Unix Host coz it merely is a client tool.

Now windows 2000 can provide the terminal function like Unix that support user to telnet Windows 2000 or XP and run the application from the client. This is a server-end service and it merely is bundled in the Windows 2000 server version, but not in windows 2000 personal version.