Jnes is what I've recommended to all my friends. It worked the first time I tried it, and I didn't know much at all about computers then.
I have a question about the fullscreen mode: Is is possible to use it full screen while keeping the aspect ratio? If not.. that'd be a cool feature to add..
I ask because I like playing fullscreen on my widescreen laptop, so when it stretches, it really stretches.
I know Playstation emulators work completely differently and all, but when PSXeven streches to fullscreen while keeping the aspect ratio, it puts black borders on the sides of the screen, like a widescreen TV does when you're watching normal channels. I really don't mind how it's done - if Jnes has any kind of aspect ratio thing I'd be more than happy and grateful for it.
Just the fact I can play some of my old favorite games on the computer.. damn, I love this emulator.