a boolean in Bryce does not modify mesh/geometry. A negative boolean only tell Bryce's renerer "Don't Render This". If it does export,..the negative will be visable. Perhaps this was changed in Bryce 5 but I would doubt it.It's just the way Bryce handles it's booleans as far as I know. But..I've been wrong before. 8 ) Tom

“The fact that no one understands you…Doesn’t make you an artist.”