BMW Navigation Forum – http://www.bmwnavigation.com/

OpenBMW Forum – http://www.openbmw.org/

Yahoo BMW Nav Forum – http://autos.groups.yahoo.com/group/bmwnav/

Yahoo I-Bus Forum – http://autos.groups.yahoo.com/group/HackTheIBus/

Yahoo OpenBMW Forum – http://autos.groups.yahoo.com/group/openbmw/