Remove "Help and Support" link from XP Start Menu

To remove the Help and Support link from XP Start Menu, try this:
Right-click Taskbar, choose Properties
In the Start Menu tab, click Customize
Select the Advanced tab
Uncheck Help and Support option.
Click OK, OK and close the dialog

 For Windows Classic Start menu, you may need to modify the registry directly:
Click Start, Run and type Regedit.exe
Navigate to the following location:

HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Explorer \ Advanced
In the right-pane, create a new REG_DWORD value named NoStartMenuHelp
Double-click NoStartMenuHelp and set it's value to 1
Close Regedit.