Click the Start orb.
Click Control Panel.
Click System and Security.
Click System.
In the left pane, click Advanced System Settings.
If a UAC window opens, click Yes.
The System Properties dialog box opens. Click the Computer Name tab.
Click the Change button. In the Computer Name box, type a new name and click OK.
A message appears, stating you need to restart your computer for changes to take effect. Click Close.
A dialog box displays, asking if you want to restart now or later. Select either option.