Well, the first step to getting it working would be to download the Playstation's BIOS. Unless you have the equipment to do that yourself (which you almost certainly won't), it's illegal and I can't help you.
Then you would have to download drivers, which you can do by looking at
this link. (If you miraculously have the equipment to extract data from a 14-year old console.)
After that, there's a bunch of hardware and software configuration settings and making controller schemes to do, but it's pointless. It's so much easier to go to your local pawn shop and buy the console itself for playing "only games I own."