Changing the snooze button functionality

I use my calender a lot with my Nokia 3650. However, I have a little problem: I keep my phone in my pocket most of the time, thus, keys are often being pressed unintentionally. As such, it is very easy to dismiss calender events by snoozing the alarms because I "press" the buttons while the phone is in my pocket. Can anyone tell me if there a way so that only a particular button or a combination of buttons can snooze the alarm? Thanks...