1998 honda legend

hi guys i have a 1998 honda legend and all i want to know is does anyone know to to install and aux cable in.
my headset looks like this
http://i3.infocar.ua/img/bazar2/333/.../1977347_3.jpg

i found this article on acura world
http://www.acuraworld.com/forums/f40...ers-etc-76610/
but im not sure if this will work(probs will) the same and to be honest im not even sure what cables hes pointing at, so if anyone could clear things up that would be great.
also could anyone tell me if unplugging the cd changer to plug in the aux adapter means you cant use the cd changer anymore. if any could tell me a way of still adding on the aux cable and maintain the functionality of the cd changer that would be greatly apprenticed.

i may sound a little incompetent...but thats because i am.
im looking for any advice or help because i really dont wanna **** up the wiring in this car .
its my first car at 180kms i plan on driving this for atleast another 50, i really just wanna plug in my phone and listen to some tunes.