What do I do with a .smc file

[dfq23]

I've got a demo of Dungeon Guarder, but it is a .smc file (no it is not a snes rom file), but I can't work out what to do with it. I know it is like an iso file, but where do I put it!

 

[Azure]

I've got a demo of Dungeon Guarder, but it is a .smc file (no it is not a snes rom file), but I can't work out what to do with it. I know it is like an iso file, but where do I put it!

You can't play it on the actual GP32. It can only be played in GeePee32 or in the demo player (the thing that you get when you DL the demo).