Good article for your programmer types: ISA Server 2004: Developing an Application Filter for Microsoft Internet Security and Acceleration Server 2004 -- MSDN Magazine, March 2004: http://msdn.microsoft.com/msdnmag/issues/04/03/ISAServer2004/default.asp x HTH, Tom Thomas W Shinder www.isaserver.org/shinder <http://www.isaserver.org/shinder> ISA 2004 Beta - Get it now! http://www.microsoft.com/isaserver/beta/default.asp <http://www.microsoft.com/isaserver/beta/default.asp> ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp <http://tinyurl.com/1llp>