D-Link Air DWL-520 Manual page 19

Networking Basics
Computer Identification
C. Type a unique, identifying name for this particular computer
in the Computer name: box. This will be the name that other computers
on your network will use to communicate with this computer.
computer's name must be unique on a particular network or confusion will
result. (The computer's name should be 15 or fewer characters with no
spaces.)
D. Type the workgroup name this computer will be a part of in
the Workgroup: box. All of the computers on your network should have
an identical Workgroup name.
E. The Computer Description: box is optional. You may enter
a description that will help you identify this computer on your network.
Then click OK.
F. Repeat this process for each computer on your network to
ensure that they all have a unique Computer Name and identical
Workgroup.
(continued)
Each