After a lengthy conversation with the support staff at NI, I learned some things that are rather hard to divine...
I wanted the NIDAQmx.dll and its associated header file.
NIDAQmx.dll is really nicaiu.dll and it resides in C:\WINDOWS/System32\nicaiu.dll.
The header file NIDAQmx.h is located at:
C:\Program Files\National Instruments\NI-DAQ\DAQmx ANSI C Dev\include
Example code that uses the methods may be found in (of all places):
C:\Documents and Settings\All Users\Documents\National Instruments\NI-DAQ\Examples\DAQmx ANSI C\
This post would have helped me when I was looking, so I thought it might help the next person whose trying to use the "loadlibrary" function in Matlab to control their DAQPad-6508.
yours,
Raj
