PocketMatrix

Imaging.h is in the wm2003 sdk. I didn't bother installing the wm5 sdk, it seemed geared toward c# (etc). Since your using evc3, you may want to do a clean on the projects, delete the .aps files [etc]. to make sure that the evc4 stuff isn't causing problems.

It's possible that on earlier SDK versions, you may need to change that to:

CoInitialize(NULL);