I'm glad that is going to work for you. I use Normal Maps for any small lettering or repetitive detailed textures that would be time consuming or difficult to model. It's easier to modify a flat drawing than a 3D model :)

I've tried Crazy Bump, the Photoshop built-in Normal Map generator, and others. I noticed each gives a different result based on their internal algorithm, so play with them and perhaps one will work better than others for your application.

Ed Ferguson