When you say you want to make redistributable props using Poser Pro, are you saying you want to use Poser Pro to create the props, or do want the props to be usable in Poser?

For creating props you're generally going to want some sort of 3D modelling program, like Blender or Hexagon (I mention them since both are free) or 3D Studio Max (professional software, also very expensive).

Once you make the prop, go thru the steps of UVMapping it, making textures and/or materials for it, etc.  Then you can import to Poser and set it up there with morphs (if any), texture and material presets, a pp2 file (or cr2, etc.) with external geometry.

If you want the prop to be also set up for ready use in other software, like Daz Studio, that requires its own set up process.

Then you can zip it up for use on PCs, and probably a .sit file for Macs.