I found this in a few different places around the 'net - hopefully it's helpful:

Synchronize Your Computer Clock with an Internet Time Server

Does your computer have the right time? If your computer is not part of a domain, you can synchronize your computer clock with an Internet time server. To do so:

  • Double-click the time on your task bar.
  • Click the Internet Time tab.
  • Select the time server you want to use and make sure to select the Automatically synchronize with an Internet time
    server check box.

does it work on win2k?

Greetings.
Same question!
I use win2k too but I can't seem to find a tab called Internet Time or any "Automatically synchronize with an Internet time server" check box.

it is in your clock in the corner of your screen in your toolbar

Is there a way to increase the frequency at which the time server is automatically queried. Once a week doesn't cut it for me.

Thanks.