Make sure the 2k server's CMOS/BIOS clock has the right time as well. If they are, then try Control Panel > Date and Time,
Under Time Zone tab:
Disable/uncheck Automatically Adjust Clock for Daylight Savings Change
and
Under Internet Time tab:
Disable/uncheck Automatically Synchronize with an Internet Time Server.
If you have already then try this - Following posted in the web:
"just copy & paste in Notepad and save as XPTimeServers.reg, then merge it.
[REG FILE]
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionDateTimeServers]
@="4"
"1"="ntp.nasa.gov"
"2"="time-nw.nist.gov"
"3"="timelord.uregina.ca"
"4"="time.twc.weather.com"
[/REG FILE]"
============================
Hope this helps.