My company phone was an AT&T Blackberry 9000. The company just upgraded me to a Bold 9700 and let me keep the old 9000. Can I convert the 9000 to some kind of prepaid pay as you go type phone? I'm looking online for a sim card that would allow me to convert but I don't see exactly that. Maybe all I have now is a heavy mp3 player with a low resolution camera. The phone would come in handy when I'm in the Philippines if that option is available. I see references to "unlocking" phones but don't know much about all that. Thanks in advance if you can help me out.