How to know when DUAgent is done processing *.dup file

From: Kevin (kbodily_at_charter.net)
Date: 12/29/04 

Date: Wed, 29 Dec 2004 12:45:34 -0800

My shell has a button click on it to initiate updates. When pressed,
the shell app starts DUAgent,waits a little while, then commits the EWF
and reboots. Right now I use a hardcode timer event for waiting, but
would rather key off of DUAgent being finished. Can I assume that when
the dup gets deleted, the Agent is finished, or is there something better?
kevin