I'm going to simplify this by inserting illustrations on how your runtime should look like.  The image are from my old Poser 7 that has been gutted and linked as a runtime to my other Poser versions but the hierarchy has remained untouched.  I will key point the important areas to watch for but do not try to exactly copy what I have set up.   Below illustrates where your fake 'Poser.exe' should be place, within the primary folder that holds your runtime.