Challenge: Ipod/iphone to sony speakers

[almightyduck]

Hi all,

I'm new to this forum but I have a challenge for anyone who nkows about apple and sony.

Basically i want to connect a sony ericsson MPS-75 to my ipod/iphone as an external speaker.

I've managed to prise open the speaker housing and tried to connect a 3.5mm jack from an old set of headphones but to no avail.

I'm thinking the speakers need to be powered by the device as there is a mini circuit board attached to the speakers.

So i was wondering, if anyone knew of a way to change the connection from sony to an apple ipod connecter, which may provide power to the amplifier?

Any ideas anyone?