The Xfrog public plants site has a blue spruce - see http://www.inf.tu-dresden.de/ST2/cg/downloads/publicplants/ I hope you have a system with some oomph. These trees make mine choke. If you want to make your own, there's Arbaro, a cross-platform, Java-based program that exports .obj and pov-ray meshes: http://arbaro.sourceforge.net/ It comes with a bunch of presets that can be tweaked.