All meshes needed for the files to work are included.
Skin tones are realistic above the waist, there are no details below the waist though. Female bosoms are slightly enhanced (in texture only) but no silicone has been used.
Some user-created hair meshes may be high in vertex and poly counts. If they slow your game down, delete them.
Skintones and hair files are huge and come as .rar files. Download WinRar to open them. (Sorry, I don't give support on how to use WinRar).