Yeah, I had some done up at a local place, I had my artwork all ready (no problem for you I'm sure ) and it was very reasonable. Most trophy shops can do silkscreen and/or photoetching and are used to limited runs, so they don't mind smaller orders.
E-mail Greg Chupp gchupps@aol.com, he knows the guy who makes the plaques for our club's car show every year. Very nice quality and treats us right on the price.