LG 4015/ From ATT

I switched to Cingular, My new Motorola V551 got destroyed. Is there a way to unlock my ATT Lg so I can use my Cingular simm card in it?
Also/Or, If I buy a go phone at Walmart can I use my cingular card? I cannot replace the v551 right now, too expensive.
Thanks

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This is my suggestion, go to www.ebay.com. There you will find either, 1). cheap unlocking services (but you'd probably have to send them the phone so they can do it with a cable), or 2). cheap cell phones for replacement, it'd be a lot cheaper then buying a gophone, you can buy a phone for as low as $10! Just make sure you buy a GSM phone since you have Cingular (and you have your old SIM card still, right?).