it all depends on interaction. Putting everything in one sim is the easiest way, but the calculations may take a long time and do need advanced setting like self-collision. Making separate sims of parts enables easier sims but they have to be executed in the right order when they interact, and the interaction then is one way.

For instance, when Vick is wearing a wide dress and Mike is wearing wide pants, and they dance together such that the pants and the dress do not interact, these can be done separately. If they interact and the pants are thick stuff while the dress is thin, the pants will hardly be effected by the dress so the pants-sim should run first (and the dress should collide with the pants!). If they are both thin stuff and do effect each other, you'll have to put them in one sim. Then pray for the best...

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though