You could always do it this way. It's a little bit outdated but not much has changed.
http://www.vg-resource.com/thread-25353.html
You'd have to play through the game to the correct spot. I can't guarantee that the sprites you're wanting will be extracted along with everything else, though.
http://www.vg-resource.com/thread-25353.html
You'd have to play through the game to the correct spot. I can't guarantee that the sprites you're wanting will be extracted along with everything else, though.