Use PS3 controller to operate Ten +-5Vdc analogue functions

Hi all,

Not to sure where to start with this as i am an electronics noob so any constructive advice will be much appreciated.

I am hoping to either hard wire or if possible run infrared control for an already existing controller that functions a tool that currently is operated by +-5Vdc, i am looking to basically piggy back into the existing controls to allow a PS3 controller to operate it.