Hi Esther, you can almost do it yourself.   Use BB's skin nodes (I think) or Sasha_fashion's marissa_62843, I downloaded it 3 January 2011.  Sorry, you will have to dig back to around that date, I have problems setting up links.  It contains tons of nodes for skin shaders, then substitute Alyson, Maria etc heads and body textures.  It takes a little while to reconnect all the nodes to the new textures.  However, the results are really nice---IMHO.  Jan