Hi Bob,
Just like any standard DLL, NI-DMM automatically loads all of the DLLs which it is dependent upon. All of these dependencies must be loaded in order for NI-DMM to function.
There is a helpful, free utility you can use to view the dependencies of a DLL:
Dependency Walker 2.1
http://www.dependencywalker.com/
Using this utility, you can see the DLLs that NI-DMM must load in order to function.
I hope this helps!
Regards,
Sonya W.
Applications Engineer
National Instruments