1) We're most familiar with the 3ds Max to Vizard workflow but I'll check to see if an artist has suggestions.
2) You can add lights to the model in Inspector:
- Go to Create Light and select a light type to add a light
- Select the gear icon associated with the light in the scenegraph pane
- To move the light, enable translate or rotate mode using the buttons at the top of the window
- Save the model out to the OSG format and load it in Vizard