Big problem with sim cards

Greetings!

I have (ten) Cingular 3g sim cards that are in

original packaging [you know, the plastic card], but when I popped

one out and put it in a phone it said "sim registration failed",

which means either the phone was reported lost/stolen, or the sim

card is expired (right?). I tried the same card in 3 different

phones, so I know the sim card is expired. Also, I understand they expire after

three months of non-use, and the manufactered date on the batch is marked

sometime a year and a half ago...



What can I do about this? I am totally unfamiliar with any cable

methods- I've always unlocked nokias via restriction codes. [[What is the

deal with the cable? It's a USB cable right? I know you can unlock phones

through it and the internet, but what median would you use to do so? Could

this also work with expired sims?]]


If I took them into Cingular [AT&T] do you think they would

unlock them all? I just don't see them swapping me ten new ones for

free...



Any input is appreciated.

C_Harvard

 

Thanks guys, for the feedback. Both of you are correct; I went and talked to AT&T CS today and got all the answers I needed... [[like you all said, they werent expired but unactivated, so of course I would get the error message]]


thanks for your help

-ChrisHarvard