XP Pro Won’t Connect 2 Domain NT4 Server

After following all the step by step procedures connecting my XP Pro Compaq Presario S4000NX to domain NT4 server and registering the XP Pro machine to the NT4 domain server, I am still getting an error message saying that there is no server in this system. I can ping the IP address of the domain NT4 server from the XP Pro machine but not the domain name. Any advice, help and suggestion will be highly appreciated.