JSI Tip 2651. Freeware TClock can customize the taskbar clock and customize the start button.

TClock allows you to modify the clock on the taskbar in Windows 95/98/NT4.0/2000.

"Following functions are available:

Change color, background color, and font of the clock.
Show year, month, day, hour, minute, second, and day.
Alarm, Time signal, Timer.
Add some functions with mouse operation.
Modify the icon and letters on the Start button.
Modify the "Windows95" on the start menu. (Sample)
Automatically update the "Desktop Calendar" (by Shinonon).
Synchronize the internal clock with internet time servers."

NOTE: See TclockEx freeware enhances the Standard taskbar clock.