Witchboard, there's a place in OKC that does powdercoating and their prices are very reasonable IMO. Only problem is that I can't for the life of me remember what they're called. They may not even be there anymore, it's been a long time since I've used them. I had a set of wheels done and the price was very right. Seems like they might have had the word wheel in their name. Anyway, check the phone book, you should be able to find them if they're still around.
-S