ePSXe.exe

This is an Emulator called ePSXe
It's an emulator which runs ps1 games,this is a full torrent with BIOS,Plugins,so don't download anything,
Instructions:
Open Up your ePSXe.exe file
When it opens,it'll take you to a setup,in whcihyou configure your BIOS,controllersand more
After you finished that,press file (upper left corner)
Select your .ISO file you downloaded(Crash Team Racing,Spyro,Crash,TMNT,etc)
Then just wait and there you go,your game is now emulated
NOTE:YOU CANNOT PLAY PS2 GAMES ON THIS