Blending Textures Into One In 3DS Max

[ZeroError2K8]

I am wondering if there is a tutorial out there to take multiple textures from a model and blend it into one in 3ds max, for example a mask texture, a goggle texture, and a body texture and somehow make all three into one single texture so that assigning them within the .upl file wouldn't be a hassle but doing in 3ds max. Is this possible? I'm assuming this is how Evil Engine does it with his models?...