the set is for any version of Poser beyond 4.01. Being able to render against white backgrounds requires P5 because of the shader system, but these and all my products will work in Poser 4.01 or better. The only aspect that isn't usable in Poser 4 from this set it the MT5 shaders.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)