NetBIOS still alive

Recently I set up Remote Access Service in a Windows Server 2003 machine. After the installation (which went well) discovered that the computer is no longer visible in Network Neighbourhood of other network computers, and on that computer itself Network Neighbourhood is empty. Investigation revealed that NetBIOS over TCP/IP was disabled on the computer's NIC. Why it happenned I don't know. Enabling NetBIOS helped. And I thought NetBIOS was obsolete technology that we didn't need anymore? Apparently not.