desprate aiming help!

[kdisanjh]

does anyone know how to change the vertical aim to inverted?
if its stuck strictly to defaulted im gna be very depressed :(

[Baboon]

Go to: System>Control Options>Key Type then set to custom and change it from there to whatever you want.

[Bladed Mountain]

or go to your guide button, controller settings, and have it set to always invert y axis.