Look in a local phone book under "wheels". There should be a number of places that will repair the wheel as long as it is aluminum and only the rim damaged. I had a Panasport done this way. Cost is about $75, so unless it's a nice rim I'd just buy a new one. The finish probably won't match your old rims if it's anything but polished aluminum. I ended up repainting all my rims because of that. You may not have many choices depending on the material of your rim or whether you can find the supplier.