What this user is talking about is called "personalized menus" and is one of the most widely-despised features of WinXP. It violates the cardinal rule of development, which is to produce a consistent interface for the user. It can be disabled in WinXP by following this procedure:
Select Settings in your Start Menu, and then select Taskbar & Start Menu.
Choose the Start Menu tab, choose Classic Start Menu, and click Customize.
Turn off the Use Personalized Menus option, and click Ok when you're done.
Relevant article:
Annoyances.org
This is a very common question which any decent XP tech should be able to answer!
Good luck