I lately commited a new class to the AsWing Kit SVN.
It enables you to display simple message boxes in AsWing based ActionScript applications.
The class was modeled after the Windows API function MessageBox().

The repository can be accessed through http://svn.aswing.org/aswingkit
PLAIN TEXT
Actionscript:

/**

* Opens the global MessageBox instance with the supplied parameters set.

* When the MessageBox is closed [...]