>Does anyone know what all is required to get a very small Java Server
What do you mean by 'Java Server'? What exactly is it 'serving' up?
- Applets?
- JSP/Servlets?
- Java Web Start apps.?
>to run on an ordinary home page on my ISP's web server. Do I need to
>install a Java Runtime (JRE) first ?
No for the first and last, the second requires a 'servlet container'
which is effectively 'J2EE'* that comes with a built in 'J2SE'*.
* Or JEE/JSE depending upon the 'marketing nomenclature
of the minute'.
Did this have something to do with Graphical User Interfaces?
What is it?

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Andrew Thompson
http://www.physci.org/