.Time Sych on XP:How to change frequency of time set??

Tech-Archive recommends: Speed Up your PC by fixing your registry

I'm using win-xp SP2, I need to know the exact registry key to edit so
that I can force the OS to set the time more often than once a week.
I want it to do it more often because it seems to drift a lot of
minutes inside a week.

So if anyone can provide the registry entry location that would be
great.

Thanks,
Pedro

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