GPS on a ppc such as ATT8525 can it work like a stand alone GPS?

[Winston B]

I went thru a lot of answers and I didn't quite see the answer I am looking for. In other words can it work on an unlock ATT 8525 or Pay as you go service. Does it work on a ppc the same way it works on a stand alone GPS - have clear skies. Or do you have to be online for it to work on a ppc. Can it work in conjunction with Windows Pocket Street Maps installed without being online

Winston