Time

-You can create a batch file (time.bat) with command.
-In User Manager for each user (or select domain users) add in profile tab in the name of the batch (time.bat).
-enable replication on all servers and workstation
-this batch will be run everytimes the users logon.
-I suppose that you don't want to restart the servers everytime you want to sinchronize the time. Add a scheduled task to run this batch.
About Win98 workstation I think that you must add manualy this batch in StartUp folder or in autoexec.bat.

For the Users computers, you can add this line into your login script (usually login.bat)
net time [\\computername : /DOMAIN[:domainname]] [/SET]

Remember to use your server name for computer name and use your domain.

To sync your server to an outside time server I used a freeware program called atomic time sync. So that the program updated the server then the users PC sync to the server.

The following command in a login script will take care of the windows 98 clients:
NET TIME [\\computername | /DOMAIN[:domainname]] [/SET]

To setup an authoritative time server among the WIN 2k boxes read:
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q216734

It's mandatory for kerberos authentication between the win2k boxes to have their time within 5 minutes of each other.

Good Luck
0bytes

If cost isn't an issue then look for TARDIS and K9 - sad Dr. Who names but a quality product. You install the TRADIS software are your server which syncs it to an internet clock, then K9 syncs any client.

It's all shareware and is quite reasonable in price.