copy and paste where?
in the poser7 beta forum i hope :)

CL has promised a redone rigging system for years.
in fact when the poser 6 figures were released and they lacked the extra body parts that vicky3, mike3, etc have there was a statement by CL or efrontier or whomever that the reason these extra body parts (which are essentially just more workarounds) were not included is because when they redid the rigging system in poser 7 they would be unneccessary.

since then i havent heard a peep about reworking the rigging.
poser is a posing and animation application. there have been so many updates and so much new functionality added that people are losing focus as to the primary purpose of the program. its at the point now where the main thing holding our poser renders and animations back is the poor rigging.

this is how a shoulder should look:

(reposted from cgtalk, i believe the mesh belongs to steven stahlberg)