Motorola W418G ALARM CLOCK HELP?!?

I HAVE A NEW Motorola W418G ... ITS ACTIVATED THROUGH STRAIGHTTALK (WALMART PREPAID BRAND) AND THE ALARM CLOCK DOESN'T SEEM TO HAVE AN OPTION TO SET AN ALARM FOR PM.. THE ALARMS ARE LIKE PRESET TO AM.. AND THERE IS NO WAY TO CHANGE IT (OR ATLEAST NO WAY I CAN SEEM TO FIND) HELP ANYONE?