Attached Link: http://www.senosoft.com/

The best helper would be P3dO Explorer. This will show you what's in each folder, and give you tools to move or copy them elsewhere. Remember to keep things in their correct categories - for example, characters must always be in a sub-folder of the character folder, but it's up to you which one, and you can make your own at will. In Poser 4, there's a limit of 256 folders per category. If you get close to that number, Poser will start to shorten the folder names, until eventually you can't read them any more. :(