Yesterday I installed JBoss 3.2.3 on my VPS together with a tomcat5 engine. Thanks to an article from Werner Ramaekers the hole thing was installed in no time, without any problem. All webapps were easily ported from my standalone Tomcat engine to this JBoss managed Tomcat engine.
I don’t think I have enough memory to run a lot of EJB’s, but at least I can play around a bit now. If everything goes well I will upgrade my VPS to 128MB.