Extend a helping hand, twice, and it doesn't even get acknowledged. Nice.
Yet, I feel compelled to say it again, despite my suggestions falling upon deaf ears (or blind eyes in this case), I would suggest you post a screenshot of your Xpadder configuration so we can see that you at least have THAT configured properly and knock one thing out of the equation. If you're using Xpadder and it isn't working still, you may not have bound the buttons properly/at all, since Xpadder emulates direct keyboard and mouse input. As far as Maplestory would be concerned at that point, you would tell it to not use the controller (uncheck the "use controller" option) because you're not using a controller anymore, you're using a keyboard and mouse via a controller.