Thanks for the tips, all. Luckily, this is less of a pressing issue than I initially thought. I will probably get prepaid SIM cards. Rob, thanks for confirming my suspicion regarding the lack of T-Mobile stores in our area; clearly it's not their town. Cingular will likely get the contract, though I'll probably keep my domestic phones on Verizon. ... did I mention this is for the cell phones I manage at work?