Use your decryptor. Aim the decryptor at the keypad in the room next to mayhew's office. Click and HOLD the butoon you use to fire any other normal weapon. It only takes a few seconds, and the numbers should appear in decyptor and the door will automatically open. DONT FORGET TO HOLD THE BUTTON AND MAKE SURE YOU GET THE ROCKET LAUNCHER THING.
All u need 2 do is enter the cardkey to the door and than press action to open it than wait 4 the computer to appear than press action than RUN!!! because security agents/mounted machine guns will come and kill u
