Backing up bagginsbill here a bit, I can't see how a GUI will be of much use for this type of thing.  Mainly, it's a language (in its own right) that allows you to turn basically (but not totally) mathematical concepts into Poser shaders.  The only GUI for something like this that I can pull from is LegOS and its clunky little blocks (which I quickly bypassed for real programming). :)

Now, there might be a GUI concept of use in this somewhere - it would be ultra neato keen (sorry) to actually see the results of what you are 'programming' and to have a little script editor there as well (say, script text on one side and a graphical box to show the Poser material result).  So you enter whatever code and then hit a button to display what would result - something like a 2D/3D plotting application (e.g.: Mathematica or MathCAD).  But that would depend upon the extent to which this can be achieved.

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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