Login ?

From: dave (dave_at_discussions.microsoft.com)
Date: 09/22/04 

Date: Wed, 22 Sep 2004 11:31:02 -0700

 Hello:

 I have the "appl.exe" that starts before any user is being login.
 
 The behavior of the "appl.exe" will change after any user log in.

 What is the best way to find out that user has logged in already ?
 
 thanks,
 mike