How do I use an Emulator?

[SegaGamer]

I saved the file of an Emulator to my program files,and I'm not sure how I'm supposed to install it.Can someone help me?

[Nightmare]

Which emulator do you have?
And for which type of games is it?

Greets

[SegaGamer]

I believe it was zsnesw142 for SNES games.And like I said,I saved the file to my program files and I don't know what to do with it from there.