/B><I>milliseconds</I>?</A><DD>
Sends a broadcast message to the system and running programs to notify them
of certain updates.  This is necessary to propagate changes to key registry
keys like Environment.  The timeout specifies the amount of time, in
milliseconds, to wait for applications to respond to the broadcast message.
It defaults to 3000.  The following example demonstrates how to add a path
to the global Environment and notify applications of the change without
requiring a logoff/logon step (assum