I'm under Applecare, so it wouldn't cost me anything.
I'm also in Beijing on a trip, and I won't be back in the states for a month, so it would be hard to get my hands on a Momentus XT, which is what I'd want if I were to do it myself.
What I'm worried about is them not having the part in-store, and having to order it.
This is a custom built, 250 gigabyte 7200 RPM drive... so that might be a problem.
One more question: My HDD has some bad sectors, it's just dropping information like crazy right now. How should I verify this to them in-store?