text: To make the clock 12 hr...do the following...\n\nClick on start menu >go to control panel..\nIn control panel double click on Regional and Language option....here u can see the regional optional tab, in that u see the default language of ur system (usually English(United states), beside this there is a button named "Customize", click on the button, then, there choose the Time tab from the options(Number, currency,time,date)..In time tab, just choose the time format, "h:mm:ss tt", it's for 12 hr clock....that's it