The game was never released in the states. Only in Europe. If you had a modified Playstation you could play imported games like this.
The game is ok though. It's pretty much a crappier version of Time Crisis, and the graphics for the game are really bland and uninspiring. Even for playstation, they could of done a lot better. The ghosts pretty much look like cardboard cut-outs.
You can probably find the ISO if you look around enough. It's a rail-shooter game, but you can play via-controller. Playing with a gun-con doesn't add much fun unfortunately.