VisADders.
Thanks for Bill and Tom for their help. I ended up just downloading the 
Windows installer version  - runs straight out of the box, like a charm. 
Whoa! I'll leave my Linux problems behind for a rainy day.
The last piece (I hope!) of my particular puzzle is one that may not even 
be a VisAD problem, but I'm hoping you can help me out. I need to use 
JNumeric along with VisAD, for the simple reason that my existing code 
already uses it and I don't want to re-write it. I'm having trouble getting 
the VisAD Jython script editor to find this jar file. I've tried setting 
the CLASSPATH variable, and dropping the jar into the VisADJython 
directory, home of graph.py and subs.py. It doesn't work.
I couldn't find anything relevant in the VisAD mailing-list archives. I 
apologize if this is off-topic - I haven't had much luck finding anything 
helpful with Google either. Anybody have any other suggestions?
-Frank
PhD, Computational Biologist,
Harvard Medical School BCMP/SGM-322, 250 Longwood Ave, Boston MA 02115, USA.
Tel: 617-432-3555       Fax: 
617-432-3557       http://llama.med.harvard.edu/~fgibbons