How do you customize the camera button?
 

I'm surprised that the following question that I posted over at MoDaCo did not generate any answers. Thought it was a pretty plain, basic question.
Any ideas?

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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.)