[Spun-Dumb]

I am, was playing top spin 2 on for the pc . I have accidentally while setting up the keyboard controls hit the wrong dam button and now the key that lets you continue "next" is binded to "unknown" and i cant seem to get around it. Is there some way I can fix this? I have done keybinds before in text docs. but honestly I have no idea how to go about that with this game. I am about 3/4 of the way through this god for saken game and I realize I am a total idiot for fucking with the controls this late in the game but............ any help would be appreciated.