How do I intigrate .jpeg texture files into Daz studio 4.7?

I'm new to this, so step by step instructions would be helpful. I have tried bringing the texture files ("10 Fur textures" and "6 furs") into the studio several times using the "import" icon in the file tab. A help ticket to 3DEXPORT said to open them as an image file, but I have no idea how to do that. Isn't there some way to put them in the studio where I can see them in one of the content libraries? I have also tried to open them via the surfaces tab, but they don't appear there. Any help will be appreciated.