yor name in xp or vista properties

Change the registered user and company name in Windows XP / Vista

Network administrators have had countless times that they need to change the registered user and company name for a Windows installation. Unfortunately, this process is rather difficult and needs to be done through the registry. Fortunately, by following the steps below you will be able to edit the registered user and company name for either a Windows XP computer or a Windows Vista computer.

To begin, first verify the registration details of your Windows computer. For Windows XP and Windows Vista click on Start and right-click on My Computer (just Computer).
In order to change your registered user name, you will need to edit this information in your registry.