As a brycer stuck with poser 3, i want to know if i import a prop with multiple parts then when i have retextured it, how can i save it back to the library as a single object as it was when i imported it not as say 1 sofa and then six individual cushions.

In P4 parent the cushions to the sofa (Object>Change parent) and then save the sofa and say yes when asked if you want to save the whole group: see if that works in 3.

Not sure if I understand your question completely, but I'm also stuck with Poser 3 (and fast getting tired of complex workarounds to accomplish the stuff that sounds really easy in P4). I think you have 2 options. One is to export your new sofa from Poser again (it will go off as 1 obj file) and then import it again as that single object. Then you can add it to the library. If you ever want to make any part of it movable I suspect you'll need to get involved in heirarchy files and make a figure out of your sofa. I've been beating my head against the limitations of P3 for a while now (and discovering some of the tricks the rest of the poser community have long-since forgotten when they upgraded). I'd be happy to 'compare notes' if you like ;-) o b