How to disable PrintScreen?

How to disable PrintScteen in AS2.0 which should work in both Player 9 & 10.
I used this ActionScript Code:
[LEFT][COLOR=#993300]System[/COLOR].[COLOR=#993300]setClipboard[/COLOR]COLOR=#000000[/COLOR];
[/LEFT]

method. Its works only in Player 9. Its require ActionScript that originates from user interaction to work in Player 10.

I want to use it on onEnterFrame

Anyone knows anything on this… pls help me

Thanks,
dilip