Model: Nokia 6126 IMEI 357654012111707 United States Cingular/AT&T Thank you very much for your help!
Call AT&T and ask for the subsidy unlock code for your phone. They say it'll take about a week. It took 4 days for me. They emailed me the code and instructions to unlock and it worked perfectly. I went to Europe put another sim card in and I was good to go. Good luck.