You can only import GSM phones that support the 1900MHz band. You should call your GSM provider first and ask them if they can activate a certain phone.
make sure it is an UNLOCKED phone, cuz if not, it is useless. Also, thease dumbass carriers will STILL make you sign a one year contract, even if you provide your own equipment. HOW GAY. OH well, I have issues aginst the cell phone companies.