Auto Network Logoff

From: aspirin2004 (aspirin2004_at_yahoo.com)
Date: 04/20/04 

Date: Tue, 20 Apr 2004 09:05:04 -0700

I run a properly configured 2003 Active Directory server
based backend and XP Pro with service pack 1 front end
over a fast ethernet network.

I want to have the XP Pro's logoff the network after a
specified period of inactivity. Anyone know how to do
it?