How to Change Name and Company Information After You Install Win XP

Start/Run/Regedit

"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion"

In the right pane, double-click RegisteredOrganization. Under "Value data", type the name that you want, and then click OK. To change the name of the registered owner, do the following: In the right pane, double-click RegisteredOwner. Under "Value data", type the name that you want, and then click OK/Exit.

Log off or restart Windows