This thread should serve as a colection of links to information of interest to ZBrush users who will be rendering in Mental Ray. I included some resources I have found online which may be helpful. Feel free to add to the list.
HighEnd3D Mental Ray FAQ
A thread concerning the Approx Style bug in Mental Ray for Maya from the HighEnd3D list.
Mental Ray Wiki
LA Mental Ray Users Group
Paolo Bertos incredible resource for memory optimization in Mental Ray
Video tutorial on rendering ZBrush displacements in Maya
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