How to set up computer name and workgroup in Win XP

Computer names are used easier identification of computers on a network. This is very important especially if you are using file sharing. Computer name must be unique for each computer. Computers in a network may also belong to different workgroups. A workgroup is a group of computers on your network that share common resources. As you may have noticed the default workgroup in Win XP is WORKGROUP. This name is assigned during installation of Windows, but you can easily change it by following the steps described below.
1. Right click on My Computer icon on your desktop and Click Properties.
2. System Properties window will appear. Select Computer Name tab and click Change to change computer name and workgroup. As an option you can also enter a computer description.

3. Enter your new Computer Name and workgroup, and Click OK.

4. System will prompt you to restart computer. Click OK and restart your computer in order for the changes to take effect.
5. After computer is restarted, go to System Properties window again and check whether the new changes are active.

article source:http://pc-level.com/2010/03/how-to-set-up-computer-name-and-workgroup-in-win-xp/