Heater blowers, Rover 45, only works on full?

Hello,

I'm new to this forum but I'm defintlly need some help with my car.
I have a Rover 45, build 2005, with climate control and my blower only works on full. I can turn off the climate control but it still blows at full speed. Everythings still works, heat, cold etc, only the blower is at full speed. I think my resistor is broken, as I've read on this forum but I can't find a new one.
My Rover 45 is build in 2005 (the last Rover cars with the "facelift") and the resistor is a totally different one then the one mentioned in this forum. Where can I find this resistor.
Can somebody help me?

Regards,
Johan Siccama
Holland