As I'm looking through some sample driver code, I'm perplexed at all of these calls that are being made that I can't seem to trace back. such as "get_module". I don't see that when I run a search for functions in BeHappy. And I can't even find a part of the BeBook that mentions PCI.h for instance. How on Earth, besides using my BeOS text references that are 1600 km away in Sacramento, am I supposed to find out what all of these functions do and where they are included from??? Clay