Journal tmhsiao's Journal: Synching time with Windows XP
Apparently everything written about Windows 2000 doesn't apply to Windows XP when it comes to synchronizing time with NTP. "net time /set" does not work, even after the appropriate "net time /setsntp:server" command.
Windows XP requires the following:
C:\>w32tm
/resync
There is no longer a '-once' option to the w32tm program, and you shouldn't need to stop and restart the w32time service for this to take affect.