Hi Joe,
> Thanks for all your help.  I really appreciate being able to knock things about before I code.  And thanks for the code snippets I always find something useful in them.
>
> David spoke about a RDB and a Table object.  I have always thought a Table object would very handy to have in smalltalk.  But I never see it.  There is a Matrix.  Maybe that can be used.
>
> Or am I missing out on the power of defining my own arbitrary objects and just keeping them in a collection?
for your internal purposes you want objects and collections. Matrix and 
Table are artificial to most domains.

Cheers

Herbert