How-To Get GPS/Rev A on Sprint Touch

[mrpostmansav]

My device is an ALLTEL HTC TOUCH - I hear conflicting stories -
is there, or is there NOT a built in GPS chip ( even though it may be locked out ) ?
I don't understand why some providers would have a GPS chip in available for use, while others would not - isn't the heart of the phone the SAME for each one that comes off the manufacturing line? People are posting threads about getting GPS to work on a device that I thought didn't have built-in GPS capability? I have google maps installed but of course the " use GPS " menu selection doesn't make anything happen. Don't mean to sound dumb ... just confused