@Garry:
simply do a
svn checkout svn://svn.caucho.com/resin/tags/4.0.6
enter the directory and execute
ant
then copy the files
lib/resin-kernel.jar
lib/quercus.jar
to your WEB-INF/lib folder.
The download website isn't updated for months... I think they are
quite low on personal currently.
to see all available versions, do a
svn list svn://svn.caucho.com/resin/tags/
if you're a githubber, I just imported their trunk yesterday to do
some patching.
http://github.com/domdorn/resin
kr,
dominik