Where can I buy a replacement Cingular cell phone without a new contract?

Cellphone was stolen and we didn’t have it insured. We aren’t "eligible" for an upgrade till 7/07. Where can I find just a plain phone without a camera that won’t cost us 0 or more. And if I get one will they (cingular) activate it and let me use it with my existing contract? We [...] http://bit.ly/iwtO6C