there is currently no software on the market that I have heard of that you can model and rig in for poser/studio, all modeling is done in other modelers as conniekat said and brought into poser for rigging. btw, just in case you missed it, Modo 103 just went on sale at DAZ for an amazing price, this is an earlier version of Modo but it includes full upgrade rights to upgrade to the upcoming 301 version for a very low upgrade price.