Windows Management Instrumentation

http://support.microsoft.com/support/windows/inproducthelpme/si_app_wmi_control.asp?LN=EN-

In the above referenced document it states, “You can start WMI by clicking the Tools menu and then clicking WMI Control.” I wish to know which tools menu. I also wish to know why sometimes under Win ME, winmgmt.exe is activated, and sometimes not. What triggers it?