Okay, so I've imported my mesh into unity 3D, but how do I apply all 3 textures to that model? I only see options for Diffuse/Normal or diffuse/ spec only. I've googled and everything -.- it might be something simple but the materials dont allow slots for all 3. Anyone?
Choose Bumped Specular or something like that. Forgot the name, but anyway, that's what you need. You have to keep the specular on the alpha of the diffuse though. I don't think you can use 3 slots for that on the default Unity3D shaders.