I'm completely new to the ppc world and just bought a "unlocked" 4100 from ebay. The problem is, when I put my t-mobile sim card in it says that it's unregistered or there's no sim card. I realize there is an unlocking code in this thread but I have no clue how to get it to my ppc! When I connect the usb chord, it says that there is new software found, but nothing pops up and nothing is installed. What am I missing that I need to get to finally unlock this thing? PLEASE HELP!!:s:

If it finds you network and starts to sign in to it the you will see a message for providing the unlock code if you do not see that then your phone is unlock allready.. you need to install activesync 3.8 before you connect your PPC to your pc...try this and let me know..

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AUDIOVOX PPC4100