[quote user="Christmas050873"]When doing a find/replace Microstation pops-up an application modal dialog box but doesn't "kick-off" the IModalDialogEvents[/quote]
The Find/Replace Text dialog is modeless, not modal. When the dialog is visible, you can continue to do other things; a modal dialog would stop you doing other things.
A modeless dialog has nothing to do with the IModalDialogEvents interface.