Attached Link: http://www.mentalimages.com/2_1_0_mentalray/index.html

What version of Maya do you have? If it's 4.5 or 5, I'd really really really recommend using that - Maya 4.5 and newer come with Mental Ray, which is one of the very top notch renderers out there that has been used in many well-known feature film productions. I hear that its integration with Maya is not as good as it could be, but this is really one of the best renderers you could possibly get and it sure is worth spending a little time learning to deal with it.