I never ever ever want to click on the “Help and Support” button in the WinXP start menu, but I frequently do when trying to click on something else (usually “Run…”).

I found this info on http://www.winxptutor.com/hidehlp.htm

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.