Can't you just transfer the SIM? Worked for me with my HTC Magic when I was still on a BB plan. Otherwise, based on what you're trying to accomplish, you're asking the wrong forums. You should be over at CrackBerry asking how too use your BB as a wireless hotspot. As I recall, it was possible with a PC or MAC with PDAnet or tether.com's product. But, BB Desktop Manager needed to be installed on the desktop computer.
So, you're prob SOL. Just pull the SIM
Samsung Galaxy S III - at&t US i747 version
Creator of: i747z (Modified) Stock Odexed ROM