There are two more resources (both from the Java world), that I think do an excellent job outlining exception strategies.
Effective Java - Joshua Bloch - Chapter 8 has a number of guidelines on Exceptions and the Coad Letter's most recent issue on modeling also outlines a similiar stratgey. http://www.thecoadletter.com/issues/modeling/coadletter-modeling-090% 20exceptional%20strategies.htm Good luck Mark Levison You can read messages from the DOTNET archive, unsubscribe from DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com.