http://www.daz3d.com/victoria-4-for-genesis-2-female

Is what you need to get a V4 texture onto G2F. The convertor is useful and probably makes things a bit quicker. Personally I just load a V4 apply the mat I want to use and save as a material preset and then it will apply to G2F. 

 

For Genesis its just load the mat and alter the UV I think that Genesis comes with the V4 UV.