Is Jive 2.3 available as a war file?
There is a war target available in the build.xml. If you search the forums you can find more information about it.
You can also read this link http://www.jivesoftware.org/community/entry.jspa?externalID=431&categoryID=22 to learn how to create and install JM as a web application.
Regards,
– Gato