The most honest kind of support is peer support from the community. Here a few community resources.
The user forum is for end users questions. It's the place to ask for support.
Developer mailing list
The developer mailing lists is for project decisions.
Currently no IRC server and channel have been chosen yet to hold real-time meetings.
Geoffrey's proposition: irc.codehaus.org #spring-richclient (because it has #maven too)
NOTE: Important discussions on IRC should be logged on the developer mailing list.