reseting speed dial shortcuts that came with your phone

i just updated my blackberry curve on my computer and before i updated it "a" was system lock. well now its keypad lock and the only way i know how to lock my phone now is to wait for it to time out and i had to move the lock icon from the menu to my homescreen so i could lock my phone easier. does anyone know how i can reset the keypad and change "a" back to system lock?

hi smoothrider. by version do you mean the type of phone i have? i have a blackberry curve 8530.