I'm not aware of a product that would satisfy any of your three questions. The iPhone and the upcoming 3G iPad are really the only Apple products that have 3G completely embedded.
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I'm not aware of a product that would satisfy any of your three questions. The iPhone and the upcoming 3G iPad are really the only Apple products that have 3G completely embedded. If you have an iPhone, you could always jailbreak it, and use one of the apps that lets it act as a WIFI hotspot, and then connect your MBP 17" to it via WIFI. Using this method you would be able to use your laptop wirelessly anywhere and with no add-on card.
I'm not aware of a product that would satisfy any of your three questions. The iPhone and the upcoming 3G iPad are really the only Apple products that have 3G completely embedded.