Check the menu for sorting options. Most cards list them alphabetically by either file name or game name though. I don't think they can really sort them any other way (except maybe by date modified...) Are you looking to sort them by genre? Or by any order you want? You may have to change the file name and add a number in front of them to get that.
Hmmm i thinks it sorted on date. Because i just put recently formatted my card, and put all rom back on, so these are in alphabetical order. and today i put wario ware on it, and it is listed as last one. (but if it was alphabetical order then it would be like the 4th or 5th in the row) and cannot change anything in the menu.
W is pretty far down the alphabetical list. The only letters that come after it are X, Y, and Z. So... Yugioh, Zelda (assuming those are the first words in your games name...) I don't know much about the M3i user interface, so I can't guide you to where the list sort feature would be.