Hi, <BR><BR>I have a requirement for intranet web application, which would work as a communication tool for a department. The application would use windows authentication. The application would provide fudnctionality to create a message which every logged in user would be able to see as a popup window on their screen. <BR><BR>I am curious to know whether it would be possible to do this in asp.net? <BR>If yes then.. <BR>1. How would I find out as to who all are logged in the application? <BR>2. How would I send the message created by admin to every logged in user&#039;s screen? <BR>3. If you are using windows authentication, does a web application maintains session? <BR><BR>Any related links or code would be appreciated. <BR><BR>Thanks in advance, <BR>teclioness