It's a Poser-based tool as far as I can tell. You run the DAZ-supplied .exe file in it (the one labeled "dpc" in the name), then follow the instructions (Personally, I always use the "Custom" install option, then have it install to a temporary directory, mostly so I can manually install it afterwards to the place I like it.) The .exe files are typical DAZ installers. I used a Virtual Machine to test it in, and no viruses or any such mayhem are in it that I can tell.
The files it extracts-out is in a pure Poser directory structure, so you'll have to have at least one Poser directory set up in DAZ Studio to make it work. Pretty sure the Python scripts it includes won't work for DS, either.
Hope this helps a little.