I saw Microfour.StrataFrame.Messaging in the project wide namespaces listbox but I didnt see Microfour.StrataFrame.Messaging.MessageForm in there. Any idea why?

The project-wide namespaces only shows the actual namespaces.  Since MessageForm is a class, you have to import it explicitly within the code file.  Only VB allows you to import class names, all of the other languages only allow you to import namespaces, so you would import MicroFour.StrataFrame.Messaging and then call MessageForm.ShowMessageByKey().

Thats what I suspected. Thanks for the clarification. ;-)