If you are using the files in Poser you should ask in the Poser forum. What you need to do is install the Kids base and their Morphs++ to one of the folders you have selected as a library (the folder that holds the Runtime folder - by default it will be something like Smith Micro/Poser 8 Content in the Documents folder for Poser 8). If you want to avoid duplication I'd use an extra folder, not the Poser 7 or 8 default, that you can point both Poser 7 and Poser 8 to. In any event, under Windows 7 you should not place content in the application folder in Program Files/Program Files (x86) as Windows will interfere with the initialisation step that makes the morphs loadable.