Did you perhaps download any of the extra materials packs for SU6?

I'm under no misconception, I know Blender is a totally diferent app to SU. What I mean is, within the linux community there is a widespread predisposition to only using free open source software regardless of whether it is the most efficient option.

Thanks Ron I have had a look at it. It looks complicated and I am not sure I fully understand it, but I've saved it and will study it. Thanks again. Paul