Yahoo Group for Dynamics AX
I thought I knew all the resources that existed for Dynamics AX development and now I come to find out there's one heretofore unknown to me. That is the Dynamics AX dev group on Yahoo which you can get via this link: http://tech.groups.yahoo.com/group/development-axapta/. It's quite an active group and a good place to research questions in addition to the MS newsgroups.
Just another wrench for your AX development toolbox.