Bert did the first and last ones, so I'll take this one:

>Also, how can I create a new instance of GraphMorph but give it a name
>or some way to reference it?


fred := GraphMorph new openInWorld.

Take a look at the class methods on GraphMorph, and you'll find 
several examples of loading a GraphMorph with data, e.g., loadSound:

Mark

--------------------------
Mark Guzdial : Georgia Tech : College of Computing : Atlanta, GA 30332-0280
Associate Professor - Learning Sciences & Technologies.
Collaborative Software Lab - http://coweb.cc.gatech.edu/csl/
(404) 894-5618 : Fax (404) 894-0673 : guzdial at cc.gatech.edu
http://www.cc.gatech.edu/gvu/people/Faculty/Mark.Guzdial.html