I don't understand why some people have so much trouble with windows software. Surely they aren't stuck on a desert island somewhere with just an Apple computer or Android device?
Computers running M$ OS are fucking everywhere.
Wait till you hear stories of people that take back computers / consoles for refund/replacement and you learn the reason why..................they never even turned it on...................
THE BEST METHOD to run PSX games (and everything else for that matter) is via Retroarch - http://buildbot.libretro.com/nightly/
If you have any questions on how to set it up on Windows please feel free to ask, its very easy.