On My PoserPro 2010 and Poser 8 i have a setting for minumum displacement in the render dialog. Both are set to zero. What is the range of numbers that are resonable for most projects? 0-1 or 0-1000? or 0 to Point25?

Get it above zero if you intend to use that feature.  Crashes galore if you don't.  I normally match my displacement in my textures, but I don't think it's unreasonable to set it to 1.

Good to know. I was working on a beach scene with 9 Vickys and displaced sand. It kept crashing in poser pro with displacement enabled but renders well in P8. I will try a setting of 1 and see if it still crashes.
Thanks

Attached Link: animated displacement (flash video)

I haven't had Poser crash if the min displacement bound was set too low, but it certainly will miss pixels which are displaced beyond the bound, and you'll see black  voids in those spots.  If you know what the maximum displacement is called for in the materials of your scene, you can set the bound to match.  Setting it at 1 will usually catch everything;  the (minor) downside is that it takes a little longer to render because FireFly looks that much further beyond the bounds of each bucket for displaced pixels.  I generally leave it set at 1, myself.

By the way, negative values are valid;  positives protrude outward like bas-relief, negative values engrave.  It's fine to subtract half from a map which varies from 0-1, so that the result varies from -0.5 to +0.5, and that will yield some features raised and others engraved.

lettering done with negative displacement:

lettering done with positive displacement:

Click the hotlink at top to see an example of displacment ranging from negative one to positive one, animated by driving the displacement with a movie node: (watch for ripples when she touches the sphere)

seachnasaigh

Your armor for human male is quite impressive. I'm sure the videos at their origional resolution were equallyimpressive but compression artifact has cost a lot of detail. I see thge detail here and it helps alot.
Your user name means?

Yeah, Photobucket pretty much destroys my animations.

My username is pronounced shock-nah-sigh;  it's an old family surname of Connemara Irish, and means "dodge/deflect a blow, and counterstrike".