How much ram do you have, etep? 3D World needs lots of ram. I have 384meg and can add lots of stuff to the world. On my office PC, I only have 128 and I suffer the same lockup problem. If you have 128 or less, I suggest reducing the size of the ground maps. That should help. Also, make sure nothing is running in the background. SAVE your scene before trying to render! Often you can restart Poser and render the freshly loaded scene just fine. ronstuff... only the key light has shadows on by default. You can move it around till you get the effect you want. Or turn shadows on for the front light. You can save new light settings once you get it right. I've found myself swapping the positions of the front a key light to get my desired ground shadows.