I hope you mean PoserPro 2010.  Even though reversing normals will alleviate some problems, you must take into consideration that certain mat room tweaking must be applied to make the textures respond to light better.  By default, gamma correction is active in the render settings, which means all transparency, bump, specular maps will need to have their own texture gamma settings reset to 1.  Diffuse_values should be decreased to less than 100%.  And whatever lighting options you are incorporating into your scene, should be reevaluated and intensities decreased to accommodate Gc.