Well, I guess everyone's initial response would be "Why do that when you can import it into FCP the way you are supposed to using Log and Transfer?" P2 workflow exists so you don't have to "capture" anymore.
Otherwise I don't see why you can't simply hit play on the camera and hit capture now with the appropriate capture settings. Then again the question comes up. Why?
Hope that helps. I saw this last night but thought I'd let someone else answer who could explain it better. I'm just giving you the dirty basics.
Ah I see! Well the thing is my buddy has the HVX200 and he was under the impression that there was some special way to import HD... because he mentioned that you can plug the P2 card directly into most new macbooks... but he wasn't sure what the deal was exactly.
If it's THAT simple... then might I say thank you, and I speak for both me and my buddy when I say, D'Oh!