The best PSX emulator
This is considered to be the best Playstation emulator. It plays most commercial games so it wont let you down. ePSXe is a another PSX emulator that takes advantage of the PSEmu Pro plugin system. ePSXe requires DirectX 7 that al the modern PC’s have and a decent 3D card.
Playstation bios image is also required to run this emulator. Currently it is the best free Playstation 1 iso emulator available. The ePSXeCutor is the premiere frontend for ePSXe. This release takes advantages of some features not yet present in ePSXe. You have to download and configure the plugins & playstation bios otherwise ePSXe will not work!
Download it Here
Here are some screen shots.
Final Fantasy IX