You can get Epsxe from here
www.epsxe.com/download.php
It has quite a complicated list of settings which you'll need to figure out.The basic start will need you to configure the Video,Audio,Cd-Rom,Controller,Memory Card,Bios Settings to it and then you can run the Disc.If The frame rates seem to fast(In case you have A PIV and or Equivalent Processor) then you can limit it by pressing Delete Key and then the End Button Twice (Atleast that's what i do).
@reddick......The only two emulators avaible for Ps2 right now are PCSX 2 and NSX2 which are in development stages and under Beta testing and cant emulate much of the PS2 games or in Short words they are Barely Playable.