You're lucky you got a full set of prints, thats more than I got when I had my wheels stolen (stock also). I live in MD, and when the cops came out, they didn't even bother to finger print it. (They did when my stereo system was stolen though.)
Did you lose all four? I only lost two, streetside. Your insurance will probably cover it (probably with a deductable), but it doesn't make it any better I know.
I wouldn't count too much on finding the persons who did it, but the set of prints should give you some hope.
Either way, get your self a set (or two!) of wheelocks, and don't keep the key in your glovebox, find somewhere else in the car to keep it.
Good luck,
Darghoul