Sens Emulators are the thing you need to play Snes Roms! I feature 2 here an eariler version and the later version of the same thing. Only difference is that there is more options in the later version. These both work and are probably the best Emulators you can find anywhere.
Inside the zip file there is a file called INSTRUCTIONS, you MUST read it if you don't know how to use a Snes Emulator.
Zsnes.zip (earlier version)