Does anybody know whether or not you can buy a phone under one carrier, and then use it under anothe

2007-06-15 13:26:07  

Does anybody know whether or not you can buy a phone under one carrier, and then use it under another.? I really want a sidekick but I have to use Surewest, and none of their phones interest me. Would you be able to buy a sidekick and still use surewest?
no t-moble is gsm and surewest is cdma
http://en.wikipedia.org/wiki/Surewest