Determining your machine's name
To determine your machine's name, follow these steps:
Press the Windows Logo+Break button. If you're using Windows XP, this will open the System Properties dialog. If you're using Windows Vista or Windows 7, you should see the View basic information about your computer dialog. If so, then click on Advanced system settings to open up the System Properties dialog.
Select the Computer Name tab.
The Full computer name should be listed here. Write this down for later use. The Workgroup is not needed.