Vivian needs V3 and the head and body morphs for V3 . Avalable from Daz Studio

.If you dont hace V3 or M3 (Victoria or Mike) the base figures  can be downloaded free, from http://www.download.com/Poser-DAZStudio-3D-Models-Pack/3000-6677_4-10579249.html?tag=lst-8&cdlPid=10581779

If the character includes textures you can use them even without the morphs , it just wont look different .

You  need the head and body morphs . They are cheaper if you buy the V3/m3 bundle http://www.daz3d.com/i.x/shop/itemdetails/-/?item=3010&_m=d or just V3 http://www.daz3d.com/i.x/shop/itemdetails/-/?item=3008&_m=d

The zip files should have a path for the files that starts from runtime . You unzip to the folder that includes the folder runtime , which should be the Poser progrtam library

example C:Program Filese frontierPoser 7Runtime  , you unzip to the Poser 7 folder and specify "use folder names "  when you extract .