need help importing to CFS2

What is the bare minimum I would need just to get a sphere to fly in CFS2?
Is there a heirarchy template you must follow?
For example: I have an exterior do you have to have an interior or other parts?
When exporting what boxes do I need to check in makemdl?
I figure I might as well learn how to get something in the game before I spend all my time modeling.
Thanks,
Matt
Is there a heirarchy template you must follow?
For example: I have an exterior do you have to have an interior or other parts?
When exporting what boxes do I need to check in makemdl?
I figure I might as well learn how to get something in the game before I spend all my time modeling.
Thanks,
Matt