Scenery. Runways and Default

I have been looking and almost found the answer I was looking for but to no avail.
KMSP. The Clear Weather no wind default startup runway is runway 4. How can I get changed to something else? I know and understand about changing winds around and all that. I meas how do I edit the airport to have the runway default change. What file is it in if anyone knows? I would appreciate it.
KMSP. The Clear Weather no wind default startup runway is runway 4. How can I get changed to something else? I know and understand about changing winds around and all that. I meas how do I edit the airport to have the runway default change. What file is it in if anyone knows? I would appreciate it.