Yep, you can use external runtimes.

Just create a folder called "runtime" and copy your pose files to the same path IE:  runtimelibrariespose

Then when you open poser, click on the very top blue folder in the library. The one with the curved arrow.  Click until you get to a folder that says the version of poser that you have IE: Poser 6

Next follow the picture instructions I've attached

"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