Hello, I just bought this off of Ebay new from a guy who said it was unlocked but it doesn't seem to be.

T-Mobile USB surfstick
Model: GI0431
IMEI: 357373022366843
S/N: PS298CD3HZ

I don't have internet until I get this working outside of a public librarz (where I'm currently at.)

Also, could someone please explain what I will have to do once I get whatever code I assume I should be receiving after making this post? All that happens when I open up the initial program that installs when I insert the USB modem is that it asks me to input my SIM pin. After I do that, it says that the device is locked and doesn't give me the opportunity to enter in any code to unlock it (as far as I can see).

Thanks!