Remedie for file not a valid win32 aplication

Hello,Please help me.
i have downloaded ps1 emulator epsxe, then done bios,plugins & configuring.then epsxe.exe appeears OK
then i download smackdown 2 game iso, after download completed i tried to open file BUT
it didn,t open showed that it is not a valid win 32 application.
please please , tell me what should i do ?
please anybody help me & tell me in brief how i can play that game on pc.
i will be thankful to you.