IRNEB -- Not sure if this is exactly what your talking about either, but found this today at the AU website:
http://au.autodesk.com/?nd=class&session_id=3054
Its an online class with handouts discussing the use of the New AutoCAD® Data Extraction API with VB.NET in 2009.
Perhaps there is something there of interest for you; as for me its way outside my comfort zone!! Cheers mate.