Joystick help

I'm having problems with my SMBX joystick configuration . . .
http://www.kupiteonline.net/product_picture/DG_1257_k.jpg - That's my joystick , everything works fine with it except in SMBX....
I'm using Windows 7 32-bit (i read somewhere that it might DEPEND on my OS), every command works except UP and DOWN commands -.- i don't know why ...
Does anyone have a solution , because i wanna play 2 players with my brother . . . :marioscap: :luigitime:

In my opinion, this game does not require a joystick to the Council is managing the game settings for all of two players

Just configurate it from your keyboard, if that doesn't work. Then I guees you need a new joy stick.