I think the reason you haven't got many answers to this is that most people here prefer to use recent versions of Software. JSWDK 1.0.1 has been superseded by the
Tomcat reference implementation available from
http://jakarta.apache.org/ , so I doubt that many people will be familiar with it. Similarly for servlet chaining. Servlet chaining was introduced in early versions of Sun's JavaWebServer, but never properly specified and never part of the Servlet API. The forthcoming version 2.3 Servlet API includes a servlet filter mechanism which is intended to provide this sort of functionality.
I'm sorry I can't help with the problem as described. Maybe if you describe what it is you need to achieve, we can help find alternative ways of doing it that don't involve servlet chaining.