Hey all, just letting you know I've got a new release of the MC4J JMX application. Its still beta to get some more testing in, but it has a lot of improvements of the previous versions.
It works nicely with JBoss 3.2.x and also has a bit of special support for JBoss capabilities. It should be compatible with all JBoss servers 3.x, though i'm working through some 4.0 issues now. There are some new XML-based rich interaction pages that will eventually provide nice custom interfaces to all types of server capabilities, but I'm still fleshing out the concepts there.