If you're using Mac OS and can't use Grouper in Virtual PC, try the following to separate the teeth, tongue and other materials from the head: 1. In Poser, select the head of the cr2 file, and export as wavefront (check all options except "weld body parts" and "as morph target"). 2. Export head.obj/head.mtl to a folder that contains all the texture files and bump maps. 3. Import the head.obj file into Carrara, using default options for wavefront (except use vertex primitives, not facet meshes, and one object per group). 4. Select the head in the assembly room. You'll see there are no groups for the teeth, tongue, eyebrows or other materials. 5. Go to the modelling room and select vertices by polymesh (see attached image). All the materials will be selectable by their respective vertex assignments. Delete or rename as desired.

You'll see that there are no groups coming in from Poser, but now you can rename them as groups in Carrara based on the material names, which are assigned by Poser to specific vertices.