Hi! Purchased a 2007 X5 (E70) w/o nav last December and have a question about the voice command.

I was told that without the Nav system, the voice command only works for phone functions. This is because the module that controls the other systems is included there. Is this true? If it is, is there a separate VR module available to control the other functions... rather than getting the whole nav system instead?

'Tis my first time to own a BMW so I'd really appreciate your inputs! Thanks!