How to fix Boot Camp time offset

I have a problem with the time in Boot Camp. Everytime I use Windows and then comeback to use OSX, the current time will be changed all the time. It's very annoying. Now, I just found the solution from this blog: http://grupenet.com/2007/12/04/fix-boot-camp-time-offset/. It's very useful.

There are 3 steps:
1. Open your notepad.
2. Copy and paste the following:
@echo off
net time /setsntp:tick.usno.navy.mil
net stop w32time
net start w32time

3. Copy it into "Startup" folder in Startup menu

Now every time you start up Windows, it will fix the time offset automatically.
p.s. If it doesn't work, try to use automate sync time. If you can access internet, the time will be synchronized automatically.