Here is a trick to add up ur name in place of AM and PM beside time and make urself to feel proud among ur group of frnds.
Its simple 
Start -> Control Pannel -> Regional and LAnguage option -> Customize (beside English US) ->
Go to TIME tab -> Change AM symbol and PM symbol from AM and PM to ur name -> Apply -> Ok …
IS it changed ???
Might be not …Now go to time in taskbar and Double Click it to open “Date and time property”
…Look place where time changes in digital form i.e. 02:47:52 AM , click to arrow to chage the AM or PM by selecting and press arrow. It will Show ur name or name that was entered by u, Apply -> OK and be HAPPY.