I downloaded the files and would make the following observations.

Your OBJ file does not contain sufficient body part groups, did you try and assign groups using the Poser grouping tool. Strongly suggest that you group in a third party application such as UVMapper or Blender. You can use the grouping tool but it is very easy to get polygons in multiple groups or unassigned.

Inspecting the figure's hierarchy indicated that you have parts attached to parts that they should not be. For example the head is attached to the hip.

You have duplicate geometry present. Select the BODY and translate along the Z axis and you will find a copy of the head left behind.

Joint rotations, the first order of rotation MUST be axial to the body part. The hands and head do not appear to be.

You have made a start and that is good. I suggest that there is too much wrong to be able to correct what you have, it will just be an exercise in frustration. Rather treat it as a learning process and start over. To that end you may find my series of video tutorials helpful. http://www.philc.net/rigging1.php

Again, good start, now let us go forward from there.