Sure thing.  Either you can export the obj file into a 3rd party 3d modeller. Wings3d has good subdivision tools, so does Blender. 

Or if you want to do it right in poser, you can use PhilC's Poser toolbox which has a nice triangulation/subdivision tool that I've used myself for various things.

[http://www.philc.net/PoserToolBox.php

](http://www.philc.net/PoserToolBox.php)