Hello there i have one unusuall problem here. After i install windows 2003 server and create domain controller everything work fine, DNS, active directory its work fine on SERVER. I use DHCP for IP Addressing for client.

After that i try to use one of the client, the comes up this problem. It seem that the client have difference time format with the server. Not only for one domain user but for all domain user. The Time Format at client is "Hhh:mm:ss tt" in server is "hh:mm:ss tt". I use Indonesia regional settings.

Can any one know how to fix this problem?

first what do u mean that clients have diffr time format? every computer have it's own time format and when u use Network Time Protocol, they get time from server. so are u use NTP? if yes check it's configuration.