I should add that whether to use displacement or bump mapping for this is really dependent upon the effect (are they that visible from a distance), detail (how close and realistic), and range (are you really close) required. If you really need to see the veins, even from the side, you'll have to use displacement maps as bump maps are only an illusion of texture that don't show on the edges of the object, whereas displacement maps will. If you are close in on the veins (close enought that their displacement should be easily seen ), for C4D, my suggestion is to do exactly what Poser 5 does: subdivide only the areas where the displacement map is effective and leave the rest alone. This will reduce the complexity of the overall model as compared to a full subdivide while allowing for good displacement mapping. I use this when doing landscapes with displacement maps - higher subdivisions towards the camera only. BYS