You could try the freeware program Terranimator, which makes landscapes for rendering in the free Anim8or 3d modeller. It has a facility for rendering a landscape onto a sphere. You can then export that texture and put it on a sphere inside Poser, to act as a skydome. I'm not sure if Terragen can do this, as it's a while since I took a look at it, but it might be worth asking over at the Terragen forum. As for making the background, that's not such a problem. You can even do it in Poser. FOR A CYLINDRICAL BACKDROP (CYCLORAMA) 1) Open the cylinder prop from the "primitives" library. 2a) Use the grouping tool to make the top and bottom of the cylinder a new material. Then go to the material room and make that material 100% transparent, with no reflections, etc. OR 2b) Use the grouping tool to select the sides, make a new prop, and delete the original cylinder. (Dr Geep has posted tutorials here about using the grouping tool) 4) Scale up to suit your scene. If you use a modelling program, you can just bring in a cylinder and delete the top and bottom. FOR A SKYDOME Simply open the sphere prop from the "primitives" library and scale it up till it's big enough to look like the sky. Depending on what kind of texture you use, you may have to import it into UVMapper and apply different kinds of mapping. FADING THE GROUND INTO THE SKY Imagine your skydome is spherically mapped, so that the horizon comes just about halfway up the map. Make a very small black and white texture - 256 x 256 will do - white at the top, black at the bottom, fading into each other halfway up. Apply this to the sky as a transparency map. Make a second texture with a white circle on a black background. Blur the join between black and white. Apply this to the ground as a transparency map. Now, if you line up the fadeout circle on the ground with the fadeout area of the skydome, the two will seem to dissolve into each other. If you make the background colour a pale grey or bluegrey, you'll get the effect of haze at the horizon. You could try to get this effect with the depth-cue function, but it's rather more difficult to control.