My 320D SE (which I love!) unfortunately came without a sat nav computer. I have no display for my stereo and apparently that is caused by the lack of sat nav, as they use a shared display. My question is... is there any way of getting the display back without insatlling a sat nav computer? I am having real difficulty tracking one down (apparently 65906915036 is the one I need). Alternatively, are there any other sat nav computers that would be compatible?

Any help would be much appreciated as having no display is such a pain!