Grasshopper has no light object components. You /could/ create lights with VB or C# script components, but you'd have to figure out a way to only do it once, or else you'll keep on pushing light objects into the Rhino document.
That's a completely acceptable option. I could add them to their own layer, which could be cleared if the lights need to be regenerated. I'll go post under the scripting forum to find help with that part. -Thanks