Am I eligible?

Ive been needing a new iPod/iPhone for a while but now that the iPhone is the same price as an 8 gig nano ive been considering getting it. Problem is I dont know if I would be eligible for subsidization. In december I opened up a contract with ATT to get the iPhone for christmas. 2 months later it got stolen at the gym and ATT gave me an "upgrade" phone. Now the subsidized iPhone is only given to you if you can get an upgrade once you have a contract. Since I upgraded so recently I doubt I could get it. But then again they give you subsidization if your are a previous iPhone owner. So is it possible they could give it to me?