Before I state my problem, and ask my question, I will share what software I am using/can get.

I use ZBrush pretty fluently now. So far I've done all my sculpting, posing and rendering there. I've poly-grouped, textured, UV'd, retopologized, and other things.

I also have at my disposal: Blender, Poser Pro 2012, PHI Heirarchy Builder (as I understand it, it's to create IK chains and establish best hierarchy for Poser), and UV Mapper Pro (mainly to reorder vertices and weld seams if ZBrush splits up all the groups or decides to rename verts.)

I can not get: Any software that costs a lot of money. I don't have student access to any pay-for programs at this time.

What I am trying to do: Rig a dragon I created in ZBrush 4r6 in Poser Pro 2012. Model Texture Model Topology

What is my problem? As it relates to getting my .obj grouped in a way that UV Mapper Pro and/or PHI Heirarchy builder will be able to recognize, I want to know if I need another software to do that. I want to make sure I'm not missing a link in my pipeline and hope to get some advice if there's a best way. There's not a lot of info out there, and I am wondering if I am looking at obsolete methods too.

In other words; Can I polygroup all the parts of my character in ZBrush, and export it to obj, fix the un-welded seams in UV Mapper Pro, import that to PHI Builder, and have that work?

Or do I need to make the groups in Blender or another application? Anyone have a software they'd like to recommend for grouping?

The video tutorial I bought shows the poly-groups being made, and named, in Max. Unfortunately, I don't have it.

A final question. Is the heirarchy thing even necessary? Wasn't it Poser Pro 2012, in which they introduce weight painting? Can Ik/heirarchy be controlled or set directly in Poser with a basic .obj?

I have some steps in mind to test, but I would greatly appreciate some advice before I pick a path and potentially waste a bunch of time and energy.!