Cooper Diesel Steering Wheel Controls

Hi people!

My Girlfriend has just bought a Cooper D in graphite.

It has a few extras but what she missus is radio controls on the steering wheel.

I've had a look online and seen a steering wheel where it has all the buttons on.

What I'm wondering is, can she buy a steering wheel with cruise control, radio/bluetooth controls and then get Mini to install it all for her?

Is it that easy or is there more involved?

Thanks for your help.
Sam.