I'm not 100 percent sure what your question is, but I'll do my best to run around it a bit.
d3d9.dll is a part of DirectX 9.0 that handles many parts of a graphics engine and gcard. (most advanced vertex shader is being used here today!)
Most compatibility issues forming today involve reverse look ups. Many companies are are redeveloping their parsing techniques for their graphics dev (e.g. fixing OpenGL). Meaning that old software is searching for d3d8.dll interfacing. There have been quite a few of these problems with many newer video games to hit the market.
My recommendations:
1.) download the lastest DirectX upgrade and install/re-install. Currently 9.0c.
here's a link http://www.microsoft.com/windows/directx/default.aspx
2.) RESTART you computer afterwards!
This should fix the problem (i imagine you are crashing when the graphs hit)
alternate fixes/issues:
1.) May need a software patch/lastest driver for the software you are using. Get the lastest update from ?NI?
2.) Your graphics card maynot be able to handle d3d9 (highly doubt this one)
hopefully that answered your question.
Chances are if you have seen VI in the forest it hasn't fallen.
