1. Allow users to enable the clock by disabling the GPO setting here:
User configuration < Administrative templates < Start Menu and Taskbar < "Remove Clock from the system notification area"
2. Modify the following setting in the registry for windows 2003 server
Regedit < HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\StuckRects2
Under the "settings" value you should see a string made of pairs (30 00 00 00 ff.....)
3.edit the ninths digit to match as follow:
Always on top = 0x02
Auto hide = 0x01
Show small icons in Start menu = 0x04
Hide clock = 0x08
4. Export the registry key and add it to user's logon script to deploy settings to all users.