Which version of  Poser?  Poser7 uses a object file that is not compatable with Vue.  There is a script that will convert the Obz. files into obj. files.    Also you may have to replace the old files with the new ones as Poser just reads the old ones.  (unless someone knows more than I which is quite possible)

Note:  Disclaimer:!!  I am not at all happy with the company that brought  Poser7 to life and used the new format.  I hope that the new company will get together with the others and straighten this out.