The way to uploading JVC AVCHD Videos to computer

Question:
I have recorded lots of JVC GR-DV1100 Camcorder Videos, and I want to put these clips on my computers. But I can't find a way to transfer the AVCHD footages to the computer, Is there any simplest way to do this?

I found lots of JVC camcorder owners have such hassle of transfer shots from camcorder to computer with Windows or Mac OS.