OJ Simpsom
Superstar
Good looking out.When you download it, it should come as a zipped file, if I'm not mistaken. This site gives a whole bunch of revisions, hacks and region variations in one zip file. Unzip that file to a folder, take the U.S. version of the game (should look something like [insert game name] U.smc) and add that to the classic.
You don't need to zip the files again before adding them to the classic with hakchi. You just need to check the compress checkbox, which should be checked by default