Connecting iPhone to Ford Fiesta CD player?

Hi

I have a Ford Fiesta Finesse 2005 with a built in CD player system like the one in the link below and I wanted to listen to music off my iPhone. How can I connect the iPhone to my cars speaker system?

I need a fairly cheap and simple method.

Any help would be appreciated. And please not too technical answers as I don't know much about cars.

Thanks.

http://www.google.co.uk/..._NuVLdDYNM

Unless there's an auxiliary input ("AUX") socket on your CD player you can't wire the ipad straight in.
All you can do is get one of these (below) - or similar - which work by taking the signal from your iPad and broadcasting it on a low power radio channel which you can set. You tune the car radio into the channel and away you go.

they work OK but are not super brilliant.