thanks for confirming about shades - I did wonder what it was for
yes, I did instal bootcamp drivers ( as far as I know!).....and everything else is working fine....except a spell check keyboard issue just discovered this morning which I will mention in a separate thread.
I did follow the link posted by marikavs but when I get to colour management all it shows is " plug and play monitor" and then the box which shows colour profiles associated with this device is blank, with option to "add".
that's right - the mac wireless keyboard came with the imac and can work along side the windows keyboard if necessary.