PSX on PC

Download Them For Free :

BIOS:
PSX Bios SCPH1001.bin - Needed to Play
Emulators:
ePSXe 170 - For Better Graphics And Sound
PSx 1_13 - For Easier Configuration
PSemu Pro - 1021b For Expert User
Plugins:
ePSXe Plugins - Needed For ePSXe
Eternal Sound Plugins - For Better Sound
Tools:
PEC - Psx Emulation Cheater, Gameshark Software
MemCardRex - To Edit Memory Card or Save to Other Type so You can download Savegame from Gamefaqs.com
PSX Game Edit - Manage Save Game

Games (Iso, Bin, etc):
I Recommend :
http://snesorama.us/board/forumdisplay.php?f=21
http://romulation.net
Dll Not Found : 
Zlib1.dll Not Found - on ePSXe
D3dx_xx Not Found - Install Direct X or copy From System32 on Other Computers