Level editor for Super Mario Bros.

In Super Mario Bros.

I'm having some trouble here. Where can I find a good level editor for Super Mario Bros.? I tried Google but they are not sure which level editor for which game I need. Can anybody help me out here?

I have one, and couldn't find the place I downloaded it. I sent it to your e-mail. Hope that helps. I haven't used it much, so I don't know if it works all that well. It seemed to be decent when I just messed around with it.

EDIT: I sent it from my Yahoo account since G-Mail won't let you send .exe files without some fancy footwork.

hey roth! I'm also trying to redo A SMB1 NES ROM! Can you also pass me the Level editor?