You can move some stuff by morphong it. But most of what your talking about is making a multi part object into a figure. ScottA has a good tutorial on it here A Renderosity. Sams3d has some tutorials on there site too. A quick example: You make a box with a lid in yor favorite modeling program. Export it without welding or joining any of the parts you want poseable. In this case the lid and bottom 1/2. You bring it into Poser (after making a good texture template in UVmapper). Now select the object and open up the grouping tool and spawn prop. This will break the object up into its componet parts. Delete the orginal to get it ot of the way. Now go into the hiearchy editor and put either the lid under the base or vice versa. I'd put the lid under the box in this case. Now go in to the joint editor and adjust the lids centr of rotation near where the hinge should be. Now go back to the hiearchy editor select the model and then click create new figure. Delete one you have(its not a figure) an load the one from the library. Voila! Hope that made some sense.

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"The true sign of intelligence is not knowledge but imagination".

Albert Einstein