You can also download some of the Bryce hull materials to use in Bryce 5 which is currently available as a free download from Download.com
If you need an unzip utility to unzip your 3D models try IZArc which is free to download at www.izarc.org
Online tutorials for using our models with Bryce software can be found at the Spacejetters UK website which also features a number of art galleries by prominent science fiction and fantasy artists, and a virtual planetarium of alien worlds in the Museum of Intergalactic Art
You can also find some of the latest 3D models and tutorials from Spacejetters at www.3d-spacemodels.co.uk
Other software worth considering is Daz Studio which is also available free direct from the Daz 3D website.
Just click the banner on the left to take you there.