hosts file
Remember: the hosts file is the static equivalent of a DNS (Domain
Name Server) and equates the IP address with the FQDN (Fully Qualified
Domain Name), and/or the NetBIOS name, and/or any other chosen aliases,
for IP commands and services such http, ftp, ping, nntp, etc. It is always
recommend when using static IP addresses and no DNS server.
Like the lmhosts file, hosts is placed in the \windows folder for Windows
for Workgroups 3.11, Windows 95/98 systems and placed in the \winnt\system32\drivers\etc
folder for Windows NT systems. It must not have a file extension such
as ".txt". It is named just plain "hosts". Place a
copy on every system.

hosts example
127.0.0.1
localhost
192.168.12.1 myntdomsvr myntdomsvr.mydomname.dom
192.168.12.2 wrkstation1 wrkstation1.mydomname.dom
192.168.12.3 wrkstation2 wrkstation2.mydomname.dom
192.168.12.4 wrkstation3 wrkstation3.mydomname.dom

hosts example annotated
127.0.0.1
localhost
The local loopback address: "Here's looking
at yourself kid".
192.168.12.1 myntdomsvr
myntdomsvr.mydomname.dom
The IP address is equated to the NetBIOS name
and an FQDN. The .dom extension is just an example that demonstrates our
freedom of choice when the particular subnet is not directly connected
to the Internet. We can now ping this machine using either the IP address
(ping 192.168.12.1), the NetBIOS name (ping myntdomsvr), or the FQDN (ping
myntdomsvr.mydomname.dom).
192.168.12.2 wrkstation1
wrkstation1.mydomname.dom
See above. The distinctions maintained in the
lmhosts file for NT domain
controllers are not applicable; nor are the lmhosts flags #PRE and #DOM
valid.
192.168.12.3 wrkstation2
wrkstation2.mydomname.dom
192.168.12.4 wrkstation3
wrkstation3.mydomname.dom
Important!
You don't see it here but be sure to hit "enter" after typing
in the last entry as the file must terminate with a carriage return.