The LMHOSTS file used by Windows NT contains mappings of IP addresses to Windows NT computer names (which are NetBIOS names). This file is compatible with Microsoft LAN Manager 2.x TCP/IP LMHOSTS files.
You can use Notepad or any other text editor to edit the sample LMHOSTS file that is automatically installed in the \systemroot\SYSTEM32\DRIVERS\ETC directory.
This section provides some basic rules and guidelines for LMHOSTS.