How do you customize the camera button?

[Guest New Daddy]

The camera key being so close to the lock button, I often end up starting the camera when I want to put my O2 to sleep.

How can you customize the camera button, so that it won't start unless I press it long?

I checked out the Settings->Buttons menu, but interestingly it provided no customization for the camera key, which I found very odd. (With all previous WinMo devices, I was able to customize the camera button too.)