You can surely help us! :-)
If you are interested in MDA, component-based, J2EE Open Source application:http://openuss.sourceforge.net
which uses the infrastructure of EJOSA:http://ejosa.sourceforge.net
We want to integrate *all* the EJB components from LPortal project (also Open Source), so that we won't reinvent the wheel. At the moment we have one component (Bookmark component) which we took from LPortal... Also we add a MDA layer on the top of OpenUSS. So, the task would be quite complex: J2EE, reuse, MDA.
You can write to our mailinglist if you want to!