ghonma and pjz99 are right, there is some confusion between Normal maps and Vector displacement maps. modern Normal maps are simply a diffrent type of bump map, the big difference is that while bump maps give the illusion of pushing the surface out in only one direction, normal maps give the illusion of pushing the surface out in different directions, by controlling normal directions, giving a better illusion that the shape is changed than bump maps. but its still not adding any actual surface detail like Displacement or Vector Displacement maps do, so it looses the illusion along the edges of the object. Thats not saying that if done right it isn't a step up from standard bump maps. I tend to doubt though that poser is adding Vector displacement maps, if they were they would make a lot bigger deal about it, becouse even a lot of the high end suites dont have vector displacement yet.