So, they are saying you need to update your BB software version to the same version that isn't working completely with your car? Hmm...sensible!
Well, are you using T-Mobile or Cingular? Which '07 do you have? I'd like to know if you get it going with your car. I have an '07 Coupe and I have not yet tried an 8700g in my car. I have been using my HTC TyTN. That device seems to transfer everything into the radio and I can scroll through and dial but if I use the car's voice command there is an announcement that there is no phonebook present. Weird!