Maya 2012 Multiple TGA Texture Question

Hey guys. I am slightly new to the Texturing process. Currently I deal only in Pre Texture modeling, but I took on a "for fun" project in the Steam Workshop for Dota 2. I want to test myself and do it solo. Now I am stuck and feel like a total fool because the only thing I need to know. Is how I can combine 3 or more .tga texture files to 1 object.

My Project.   Armor plates for a Shoulder set.  Texture sets consist of several tga files  (color, exeggerator, and normally 2 masks)

How can I combine them into a layered texture, or a group to apply them to one object simultaneously.

Thanks in advance.