Fran, no version of Bryce currently supports primitve and metaball exports of any kind, don't feel like you have an inferior version. No trees, no boolean models. Texture export is limited to renders of flat planes, etc., except in the case of terrains... You can export terrains, or previously imported mesh models, or stones. The terrain exporter is actually quite powerful, although obnoxiously slow, but I use Bryce to create all my terrains in Maya scenes...