I'd take it to a local wheel repair place (there's a bunch of them where I'm at) and see first off if they can repair it, and if so, how much. If it's something reasonable, I'd have it repaired, but if they come back with an outrageous figure (i.e. $500), then at that point I'd just get a set of new rims, since new rims are around $120 a piece anyways.