Carlosan - Thanks for the referral! AlienMinefield's thorough introductory tutorials on 3d Coat were immensely helpful and I would highly recommend them to anyone not familiar with the app. I followed most of his workflow (see outline) and managed to export the model with textures to 3ds Max.
TimmyZDesign - I tried your workflow but unfortunately had issues from the outset. For example, initially I downloaded the high poly ZBrush model using "import for vertex painting" from the File, but invariably it would open up in the Paint Room. And now, for some unfathomable reason I can't even do that anymore, unless I use "import for vertex painting/big reference" which I doubt is what you meant. As for importing the low poly into the Retopo Room, a pop-up appears asking if I want to save the high poly model which is in the Paint Room already. As mentioned above, I was successful in using the Autoretopo to generate a low poly mesh with attached UVs. Obviously I'm missing something in your instructions and would be curious to know what precisely it is. Regardless, thank you for your answer.
1) Downloaded the high poly ZBrush model using Autoretopo in Retopo Room.
2) Rendered seam lines and unwrapped mesh.
3) In the Bake option using "Bake w/ Normal Map (Per-Pixel)".
4) Exported the low-poly model with textures to 3ds Max.