There's a search link at the top of every page in the forums and if you want to search the dev list there's gmane http://news.gmane.org/gmane.comp.jav...work.rcp.devel.
Too bad the archives aren't searchable though...
Actualy, from memory, the ApplicationWindow is where your command goups will be located. Try something like this:
I've been giving this a stab and am kinda blocked by the extreme hiding of the BeanFactoryApplicationAdvisor.
It's the only one that knows about the command-group resource, and only allows access to 'menuBar' and 'toolBar', not to my various new (task oriented) organizations of the commands dubbed as 'navigationXXX'