It appears that all the Dynamics development resources have now been integrated in to MSDN. The new MSDN – Microsoft Dynamics GP Developer Center is designed to be your main stop for GP development resources. So if you’re a GP developer, go check it out.
[Hat Tip to the Microsoft Dynamics GP UK Blog for the info. I though I had a long blog name!]
New GP Developer Center
Archived post from 2007. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.