Now that I actually may have a tiny, weeny bit more time to devote to external communications, I'd like to announce the availability of the Service Pack 1 (SP1) update for the FSX SDK. You can find it here: http://www.fsinsider.com/Community/Developers-Corner.
This was a much tougher update to get out the door than any of us imagined - so I apologize for it's tardiness. However, I think it is adds immense value to any developer looking to build add-ons for FSX, so please take the time to download and install ASAP.
Over the next few months I'm going to attempt to address issue here in my blog that we find to be points of confusion for people. I00 also encourage you to visit the FSDeveloper.com forum to find additional help or post answers to problems that you think others might find valuable (http://www.fsdeveloper.com/).