I am only too aware of meshes, but in Lightscape, which I have used exclusively till now (I'm an architecture lighting designer). Years of experince modeling for Lightscape has instilled some kind of austerity in me! Reading so much about poly count, and your focusing on it in the corrugated metal tutorial, makes me hit the 7 button all the time!!! My main aim is to master radiosity so I can slowly replace Lightscape, no gaming etc. still images rather than animations. Thanks for the advice re converting to Mesh - I have already used the Subdivide you mentioned in one of your tutorials in order to get 'better' subdivision of surfaces, again my experience talking. Thank you for all your trouble. Looking forward to a tutorial on photometric lighting and radiosity! Maybe we can work on some kind of comparison between the two programs! Angela