Using lighting, shininess with Gizmo scatter plot

I'd like to use lighting effects with a Gizmo scatter plot. I watched the tutorial video for how to do this with a surface or a quadratic shape, but it does not seem like the same thing will work for the scatter plot. After creating a lighting attribute and adding it to the object and display lists, I figured I needed to specify normals for the scatter points (spheres). Specifically, I figured I could just add a quadratic normals attribute, set it to, say, GLU_SMOOTH, and then just drag it to the scatter plot object. This didn't seem to work.

Am I trying to do something impossible? It seems like the example in the Scatter Plots section of Visualization.ihf has lighting and shininess (another attribute I'd like to apply but haven't succeeded at, probably because I can't get the lighting to work).

I'm attaching an image of the graph I'm working on. I just want to give the 3D scatter points some sense of dimension. Without some kind of lighting effects, the don't really have the appearance of "floating" in the space.

Any help out there?

Thanks,
Nick