Victoria 4.2 Complete for Poser or Daz Studio http://www.daz3d.com/i.x/shop/itemdetails/-/?item=4781&_m=d
If you're using Poser Pro the installer wants you to install it in the directory with the poser executable. You can do two things; use the Daz Studio install or create an executable called Poser.exe in your Poser Pro directory.