range rover sat nav

[nervous]

Hi folks,

does anyone know where i could >cough< get a 2007 disc for the sat nav in our rangie? (assuming that you can put a new disc in a 2002 system?). Ive got a bunch of long journeys coming up, and I'm not all that keen on being sent to places still referred to in ye olde English by the current disc.

if anyone could >cough< help Id be most >ahem< grateful.

Thanks in advance good people