I'll give you my two cents. I never, ever install files (whether from a zip file or a DAZ exe) directly into Poser. I have my own ideas about where I want the files to go in Poser. I have a big folder on my drive that is labeled Poser Downloads. This is where I unzip or run DAZ's exe. Once everything is unpacked, I then manually move the files into the folders that I choose to. Geometry files have to be copied as is into Poser's Geometry, but the rest of the files can go into folders of my chosing within Poser. But if you do this method constantly (unzipping to a seperate and specific place on your hard drive), you will, by repetition, learn Poser's file structure. You CAN just re-run DAZ's exe file for V4 and select Poser 6 (or 7 depending on if the exe gives you that option), and install V4 directly into your Poser program. The exe will place V4's files into Poser where DAZ thought that should be, but later on you may have to go looking for where the textures were put if you decide to modify these textures in an art program. But I see no problem with just re-running the exe and selecting a Poser install this time rather than the DAZ Studio install that was selected the first time.

"A lonely climber walks a tightrope to where dreams are born and never die!" - Billy Thorpe, song: Edge of Madness, album: East of Eden's Gate

Weapons of choice:

Poser Pro 2012, SR2, Paintshop Pro 8