2I'm back in my office again after training sessions in Chicago and Boston and wanted to let you know about a book published by Joep van der Steen called Rendering with mental ray and 3ds Max97 by Focal Press. 

The book is very useful in helping make sense of the myriad of settings and combinations of settings required to achieve satisfactory results and, more importantly, reasonably efficient rendering times.  The exercises cover enough different types of materials and lighting scenarios to be useful by a wide range of users wanting to investigate the use of mental ray in production. 

Good luck and have fun
Ted