Do you have a pic of the damaged wheel? I had two bent rims on my dodge viper gts that I sent to this place in PA (see link below,) with great results. I actually sent them all 4 rims, as the other 2 had curb rash on them. They all came back perfect. I was quite impressed. Fully repaired, repolished, re-powdercoated in clear. If you send them a pic, they will tell you if it's too far gone or if it looks like something they can do. And they'll give you an estimate too. (Mine were $150 each plus shipping, which I thought was really cheap.) I don't know where you are located, but in the NE, this is the place to go. I'm sure there are many such places on the west coast....
http://www.wheelcollision.com/