Wow, good luck with that one. I can almost guarantee you it's not user-serviceable, though. Unless you're REALLY good with that sort of thing. And you run a high risk of effing something else up, ya know.
I dropped mine. It is user serviceable however. You have to take the phone apart and replace the headphone jack, and buttons. (It's on one ribbon, I guess you can say.) I've already ordered my replacement part.