It makes a difference if you are using windows pc or a mac..and whether the stuff you downloaded is for daz studio or poser.
Here is a link that may answer some of your questions.  But, keep asking them because that's how you learn.    :biggrin:    There are people here who know lots more than I do and one will pop in and answer any question you may have.  The people here are very good to help.

installing link

 

“For those who believe, no proof is necessary. For those who don't believe, no proof is possible.”

[Stuart Chase]