just to say....

no, you can't just use interchange Poser and D|S displacement and bump settings.  0 for Poser is actually 0 luminance, which makes sense from a mathematic perspective.  0 for D|S is 50% grey (or 128, 128, 128), which makes sense from a human eye perspective (breaking things into light and shadow, high and low).   you can  use a math node in Poser to get the same response (subtract .5 from your map).