Thank you guys ! :D @ Erlik, just researched the web, most of the rendering engines (including realtime ones) render triangles only, so they do their triangulation during render time (prman rendering package can render quads, for example, but it looks like its a rare thing), it seams that Bryce does it right away to save on render time later, can you imagine if it does it during render, lol, it would be even slower then it is !!! :D