DAZ 4.7 generally uses 2 Libraries by default - one at Public Documents/My DAZ 3D Libary, the other under My Documents/das 3d/studio/My Library.

While you can unzip into the first, it's usually better to let content manager handle that one if you want to use it (I don't).  If you are using the second location you need to keep in mind it is in a second library in the content manager.  If you put them in the right place, they will show up.