OK, here are a few more pics. I haven't got a 16:9 TV module in the car at the moment hence these are displaying in a 4:3 size on the larger screen.
First of all, you need to pair your phone with the system. You only have to do this once and to do it make sure your phone's bluetooth is activated and set to discover then hold the pairing button down as you turn on the ignition. You should then see this screen:
If successful the monitor will display 'Pairing Successful'. You'll then need to turn off the ignition then back on again. From now on your phone will automatically connect when the ignition is on.
Selecting the Telephone option from the main menu gives the following telephone menu:
You can use the right hand rotary button to move around the screen and enter a number manually, just as you would with the sat nav. Once a number is entered you can either use the phone button on the monitor or use the control to highlight the picture of a green handset and select this. (This means you don't have to have the phone button on your monitor - the standard 4:3 screen for example doesn't have that button.)
Alternatively you can look numbers up by going to Directory. The first time you do this it will transfer you phone book over and the screen will look like this whilst it is transferring:
And if someone calls you, the phone will ring through the car's loudspeakers and you will get this screen appearing:
And finally two other pictures that someone might find useful. Firstly the three adaptors that you need to fit a BMW flat pin radio module. From left to right are aerial, audio in (CD changer and monitor tape) and main audio connector (power and speakers etc.)
And here side by side are BM24 and BM54 tuners (BM54 on the left).
Hope you find these useful! If anyone is interested in the various part numbers let me know and I'll dig them out and add them to this thread.
Pete