I'm looking at purchasing the PPC-6700 for Alltel. But, I need to make sure that the bluetooth for the device is the Microsoft Bluetooth stack so it will be compatible with the Rockford Fosgate 360.2 that I use in my car.

I've seen it mentioned in a few different places that the device has either the Microsoft stack or the Widcomm stack. Which one is it, and how can you tell which one has which? Can it be changed if it's the wrong one?

The Widcomm Bluetooth Stack Port works on 6700
this link might help
http://pdaphonehome.com/forums/ppc-6700-xv6700/82896-widcomm-bluetooth-stack-port-works-6700-a.html