I have tried the unlocker programs for both Mac & PC and have not been able to generate a SIM Unlock code. I have a Captivate phone from AT&T that I want to use on T-Mobile and in Europe. AT&T won't help and neither will Samsung. It seems that the program cannot find a specific file on the phone. I am wondering if there is anyone in Utah, Reno, Sacramento or the Bay Area of California that can unlock it for me using the Unlocker tools.