Most of us know about the w32time service in 2000 and XP, and getting those errors in event log because an Authoratative time server could not be found.
Recently, I have had the need to make sure that our Windows 2000 machine that controls our time clock is set to atomic time. I had tried a couple of programs, and they did not synchrnize automatically. So I set to find a program that did work. What I found instead was a good document on using the builtin w32time service in 2000 and XP from the National Institute of Standards and Technology.
I am including the link to the .pdf document that I discovered that describes the process, along with the link to thier page.
Note, this is best for those people that have a full-time connection, others that do not, would probably be better off with one of the programs that require manual updating.
http://www.boulder.nist.gov/timefreq.../win2000xp.pdf http://www.boulder.nist.gov/timefreq/service/its.htm