Where can I buy SIM cards only? Please help! Any info?

I am in the USA. I bought an unlocked motorola phone and am looking at services. I wanted to know sites that may sell SIM cards only for companies like sprint, amp'd, cingular and others. I'm not exactly sure what service I will choose yet. It is going to be one of these:


tracfone


amp'd


t mobile


cingular


sprint


verizon wireless


US cellular


I know that is a long list. Can you tell me which companies sell SIM cards by itself? And which ones would work in my phone (its unlocked so I think any of them can)? And where I might be able to buy these SIM cards whether it be online or in a store. Any info is greatly appreciated. I wanna get running with my unlocked phone and a good service. Please help!

Where can I buy SIM cards only? Please help! Any info?
T-mobile might have some availiable
Reply:verizon and Sprint do not use Sim cards, so you will not be able to buy simcards from them.





Cingular and Tmobile will sell you simcards by themselves.
Reply:Try Cingular, T-Mobile and US Celullar for SIM cards.





I had an extensive answer regarding this issue for someone else, check my answer at http://answers.yahoo.com/question/index;...
Reply:Well you could go into a Cingular store and buy a sim card...you would either have to open a prepaid account or a post paid plan but either could be done. With prepaid, it should cost around 25 dollars for the sim card and phone number. With post paid, it really just depends on if you draw a deposit or not.