How to change page setup default margins to zero in IE 9, WIN 7

HI!

I couldn't able to change default margins in page setup of IE 9. I couldn't able to provide lesser margin values in page setup window. I have changed the  margins values(top, bottom, left, right) in registry editor to zero and saved it. But still having the same old default values in IE's page setup window.

Could you suggest me how to change the default values to zero in IE on windows 7.

Thanks,

Sailaja