Netbeui is the easiest protocol to run but is the least
efficient. It is known as a broadcast protocol that
basically shouts for wherever it is trying to get to and
then waits for the answer. If you get a ton of computers
on your network doing this things slow down. I really
would say unless your terminals must use Netbeui that you
should look into changing to TCP/IP. Since this uses
specific addresses for each computer it goes right to the
address instead of screaming to find the system it wants.
The big issue is the set up of things like DHCP, WINS
under the TCP/IP framework but the system itself is
faster. You can assign static IP's without DHCP if it is
a small network.