I am working on scenes using the Comic Book Preview, and as such I'm running up against a limitation of using 8 lights in a scene. Is there a way to go beyond that limitation?

Here's the source for the OpenGL limitation:

PoserSoftware.com/documentation

In case the link doesn't work, here's the text:

Lights add color to your scene, reveal cues in forms, enhance muscle contours, set moods, cast shadows, etc. Good lighting is a key element of getting your scene to look right when you render it. Lights work in renderings and in the Lit Wireframe and Flat Shaded preview modes (refer to The Display Controls and Menu for information about display styles). You can use as many lights as you need in your scene, with the only limitation being your system’s resources. Poser improves the OpenGL preview of lights in your scenes. It automatically selects the eight brightest lights to display in the real-time OpenGL preview. You can also manually select which eight lights to preview in the Light Properties palette (see Light Properties).

PS: I have absolutely ZERO interest in other types of renders (I'm working with line art illustrations), so please keep that in mind when you respond.

The eight light limit is in opengl and as such is not possible to get around directly.  About the only thing you can do is render the first 8 lights and then select then next 8 lights and finally composite the images together.

The eight light limit is in opengl and as such is not possible to get around directly.  About the only thing you can do is render the first 8 lights and then select then next 8 lights and finally composite the images together.

But why would you want to use more than 8 lights in a scene?  

That would be my question too.