The build it yourself GPS bluetooth receiver route is more expensive than the 199 or 209 buck Tomtom and others. Unless you get the Tomtom software on your table or pocket pc (or similar software) you will not be happy when comparing to say the in car GPS systems you see today.
Hope this helps.
Bob
What is the difference from buying a GPS system, and from buying a blue tooth receiver, and then connecting it to a table or a pocket pc? From my understanding for the receiver you need to download the maps to the PPC and then connect to the internet to receive directions from point A to point B, while the system you just input the address and shows you the direction..

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