im going to be playing COD world at war. i managed to get my keyboard fully configured

when making my config file i start with setting up the keyboard buttons then move onto the "axis" (for mouse x y) im not sure if im doing it right but are you supposed to autodetect then move the mouse in "x" direction then ADD, and same with y???? when i do this and start the game, my look either moves only diagonally or i have no left/right, just up/down movement BUT.... to go up/down, i have to move the mouse left/right

iv tried for hours but im officially baffled on what to do.
any help much appreciated