You're welcome GreenHawke. I started in Bryce too and still use it. Here's another neat trick for using displacement in a landscape. Find a picture of a rugged rock face, or cliff,( the ones I used here are from cgtextures.com) and open it into an image editor and make a copy to go with the original pic. Convert the copy into grayscale and apply a little gaussian blur. Open Carrara and insert a sphere. I generally stretch the sphere on the Z axis also.      Open the color tab of your shader and scroll down and select texture. Add the color picture to your shader. The preview pic doesn't look like much at this point.