If you are installing from zip files, the problem with content from DAZ is that it has a folder called content which has the runtime in it.

If you have tried to get poser to install these, go to the runtime you tried to install them in in windows explorer. You should find a folder in the title folder (eg if you are trying to install them in a runtime called "Victoria and Michael", the actual folder called "Victoria and Michael") called content. In this you will find a folder called runtime. Cut this and go up one level and paste so that it is merged with the runtime folder you already have, and now you will find them in poser. (If you have morph sets such as morphs ++ you will need to initialise these, there are other threads explaining this)

If you haven't tried to install with the poser install from zip archive feature, just unzip them and copy the runtimes and merge with the runtime you want them to be in.

A third alternative is to you use the DAZ download manager if you still have your DAZ account. By default this loads them to My Daz 3d library and you can add this library to poser.

A forth alternative, if you have them already installed for a previous version of poser, just add this library to poser.