yeah, i reckon the only thing I couldn't duplicate was the bump map, so lose the bump map and use hi-qual. raytrace settings as mentioned above.  I was able to duplicate the bad render by turning off anti-aliasing, but that may not be possible in poser 6 or whatever version OP is using.

p.s. in answer to the next message, i found it didn't matter whether texfiltering was on or off, if there is no bump map and hi-qual. raytrace settings are used.  either way the hair edges look nice.