About a book : I think it is just to early to create a book for Vue. Maybe it worth the time when Vue 5 comes out. From version 1 to 4 are so many changes in such a short time that, if we had a book now and Vue 5 comes out next year (just an idea), the book will be right to throw away. We are expecting most (and hard) a global illumination feature and if we get this, every thing will change again. Guitta