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It's the other way around.  If you don't set Smooth Polygons in render options, nothing will be smoothed.  If you do set it, you can disable it by each item in the scene as desired.

sorry no.. your're wrong try it and see.... me and my beta testers found it's the way I stated. 

Khai - With all due respect to you and youe beta testers, pjz99 and bagginsbill are correct. As for me personally, it's really not a question of me needing to "try it and see"  because as I have already stated in my post above, that I do this all the time! 

By default, the smoothing function for each object is "on" in the object properties panel, however, this smoothing will NOT take effect in a rendered image unless you turn smoothing on in the render settings.

If you turn smoothing on in the render settings it will smooth only the objects that you have it turned ON in their respective Properties Panel. If you turn it off for an object in the Properties Panel, it will NOT be smoothed in the rendered image.

On a side note, Poser automatically adds a "surface normal" smoothing to ALL objects you bring into it. (it is a surfacing issue, an illusion... like a bump map) so you will not get a totally "faceted" look to them unless polygons have been seperated. This is not something you can turn on or off, it is simply always ON..

The render global smoothing adds an additional "geometric" smoothing based on a spline or bezier curve calculation. (it actually displaces the geometry of the mesh) Much like a NURBS or Subdivision Surface object. This is the smoothig function that you can turn on or off.

Hey! His nose is dry! ... Someone should lick it,  just in case. - Diego