What format are you exporting from Poser? If you export your figures from Poser as OBJ files they should import smooth and with all their textures applied. If your figures look like they are rough carved from wood you need to edit them smooth. Do this by clicking on the model to highlight it, then clicking on the little "E" next to the model. Select the Smoothing option by clicking on the smooth sphere, you can also adjust the level of smoothing by raising the scale on the left. After it has edited the model, close the window and render. The wooden look will be gone.