Use this hack to hide the Username that is usually displayed in the XP start menu—not the Classic Start Menu, where the username is not displayed.
Navigate to:
HCU\Software\Microsoft\Windows\
CurrentVersion\Policies\Explorer
And to:
HLM\Software\Microsoft\Windows\
CurrentVersion\Policies\Explorer
Change the DWORD Value NoUserNameInStartMenu to 1 to hide the username display. The default is 0.
