Well guys. Sorry...
Of course, NextAction! is not a program for common users. It is dedicated to those who implement GTD (Getting Things Done; developed by David Allen) on their BlackBerry.
Those of you who do not know what GTD is, don't need to try the demo version. It will not meet your needs as you don't know what it is about.
Simplicity.
Productivity.
Speed.
That's what it is about when you are handling tasks to get your things done. Therefor, there are no due dates and that other stuff you don't really need to handle 'next actions' in a fast and productive way.
Again, sorry for confusing those of you who do not know what I am talking about. The BlackBerry's built-in task application should also work for you. It can do a lot of things with tasks, that should be enough