ATT Wireless vs Voicestream

Thanks to those who provided the information I was asking about. VoiceStream seems to work great at my house including the basement. I chose the Samsung N105 (Amazon.com had a rebate that covers the one day delivery charge and some extras). So far so good the few calls I've made and received were clear with two bars and to another cell phone. Haven't figured out the phone book yet but then again I haven't read that section of the manual either! I was reading somehere else in this forum (cannot find it now or recall which phone it was) on how to get the cell company name off the screen (my says T-Mobile across the middle of the screen when not in use). Is it possible to do this with the Samsung N105 and does anyone know how?