Attached Link: http://www.castironflamingo.com/tutorial/grouper/

You can import with textures in tact. You MUST export your model out of poser as a .obj this way the mapping of the textures stays in tact. Other formats lose the mapping. When you import into Bryce you will still have to play with the transparency maps but it is pretty straight forward and as mentioned above there are a number of good tut's around on how to do that bit. The other recommendation I would make though is getting a copy of the freeware version of "grouper". I have had a couple models fail to import into Bryce because of geometry issues, grouper fixes those. *(see link above)*