Soft-Edge transparent Diffuse/Bump Shader WITH Lightning

Hey community. We got a hugh problem while making a small game-project using unity. There's the "soft-edge unlit" Shader for smooth, transparent alpha display, but it doesnt allowe any kind of normalmaps or, what is even more terrible its only an unlit, so there's no kind of lightning on it. Does anyone know how to solve this problem using for example some kind of costum shader?

(For information: Were using the newest version of unity and our textures are .tgas with alpha channel)

Thanks a lot to all of you.