Well, I downloaded some.  First I tried to load was The Girl4 - no luck, says it can't find a file (but no hint as to which file) and I can't understand the Wiki help at all.  Have tried loading the thing in all sorts of places - nothing. 
I guess somebody out there must have The Girl4 working in DAZ Studio, but all I came across on DAZ was that someone else had the same problem.......