There could be multiple reasons why you would want to input a name in the Windows taskbar on your PC, like when dealing with a network of computers, to help identify workstations, or simply for a customized personal feel. With this tutorial, you'll see how easy it is to put your user name or computer name (or any other name) down in the taskbar, right besides the time in the bottom right.
Step 1: Click Start -> Control Panel -> Date, Time, Language, and Regional Options -> Regional and Language Options.
Step 2: Regional and Language Options dialogue box will be appeared on the screen. Then click the Customize button.
Step 3: Click Time tab.
Step 4: Type in your desired name in AM symbol and PM symbol drop down box. Then click the OK button to close this window.
Step 5: Click OK to close Regional and Language Options window and you are done.