I'm totally new to the whole GPS thing and I have never used it before. I plan on getting a PDA (Sprint 6800, when it's finally released) and a Bluetooth GPS Receiver (Holux 240 is what I have in mind at the moment) for GPS navigation. I'm mainly gonna use it when for my upcoming coast-to-coast road trip and while in a new city.
Is there anything I need to know or be aware of with this kind of GPS navigation setup (in general and as opposed to a all-in-one car solution like TomTom 910 or OEM in-dash navigation systems)??