First of all, I am old and so only know a minimum about computers. I have had and used MS Flight simulators starting with 2000. When I was using MS 2004, I purchased Precision Flight Controls Cirrus II and their Avionics and so used FSUIP to make the controls work. When I started using MSX I got an FSUIPC4 Key.
I have acquired a new computer and the MSFS 2020. The computer is windows10. I would also like to continue flying MSX. From what I am reading, it looks as if I might have to have more than one FSUIP program. Can you please advise this 89 Year old retired pilot what I need to make my down loaded MSFS2020 work and what I need to do, if anything to down load and use MSX.
Thank You,
John