If you want your TaskBar to display your name ,then just follow this trick
Go to:
Clcik on Start -> Choose Control Panel -> Choose Regional and Language Options -> Choose Customize (beside English US) ->
Now
Go to Time tab -> Choose Edit the AM symbol and PM symbol from AM and PM to include your name -> Choose Apply -> Choose OK
For example: If your name is “Mark”, set AM Symbol to “AM Mark” and PM Symbol to “PM Mark”.
Now, your name will be displayed in your Windows Taskbar, right after the time at the right side of the Task Bar.Its a cool trick to play with your Friends