Quote - ... but I don't understand what you mean by "load the OBJ".
For example, how would I open V3's object, blMilWom_v3.obj, in Poser for editing?

You import it.
File menu | Import | Wavefront OBJ
Then active the Morph Tool.

You can't pose the OBJ, because it's just a static OBJ, but you can apply magnets and use the Morph Brush.