There is a Reiss Body Studio plugin that can turn the millinium figures into a character with a biped bone structure applied to make it posable.  But I was wondering if this Poser 7 "biped" was a new creature specific to Poser 7 that indeed mimics the 3ds max biped?

 And if so, are there different sets of figures that take advantage of the new poser technology?

I think it would have to be if different poses could be universally applied - there does seem to be some kind of a translation involved.