Please follow these steps for finding your computer name on a Windows XP based PC.

Select START on your task bar then right-click on My Computer and select Properties.

In the System Properties window select the Computer Name tab. 

 

 The name of the above computer is CS4NS-PC (".kgbsd.org" can be ignored for the purpose of this article).

For More information on computer names see FQDN. 

Author's Notes:  There are many other ways to obtain a computer's name; this is only one example that I hope is easy to understand.