...my experience with exporting stuff from Vue has not met with really god results... the best way is to use Vue is as a background in Poser- sort of like the DAZ Cyclorama (or "Environment" I think it's called now)...in fact some people have made their Vue renders INTO a DAZ Cyclo so that you even have a grassy foreground, etc... there is even a DAZ cyclo version that has places to put ALPHA plants and trees (which you can make in Vue and export)... OR...you can BUY such Alpha plants from DAZ and/or XFrog, which can be used in your cyclorama foreground...

...LOTS of creative ways to use stuff from Vue in Poser...    HOWEVER....

...You should just consider doing it ALL in Vue - as Vue exceeds Poser for doing outdoor scenes-- and with much better Radiosity and HDRI features- Vue is even better for STUDIO work as well--- I have NO PLANS to buy Poser 7 as Vue KICKS Poser 7's butt in nearly every department!