I never install anything to the runtimes. When I install I install/unzip to a folder on my desktop called "unzipped", that has a runtime and a poser.exe file in it. That way I can rename and move files around, and then when I'm done I move the runtime to the final runtime where it all falls into place. I find that by doing this, I've saved myself problems if I've accidently installed to the wrong runtime (I have several).

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi