How do I turn off font smoothing of office 2010

I had bad surprise when I saw that MSO 2010 is smooth even under win XP.

Any way to turn I off?

I found few tutorials but none of these helped sofar.

I want to turn off smoothing in 2 places: 1) menus and ribbons 2) in that text area where you type.


Edit: what's worked on win 7 (uncheck smooth edges of screen fonts) doesn't on win xp.
HKCU\Control Panel\Desktop\FontSmoothing id 0

Does this help?
Disable ClearType font smoothing

nope.

I figured that in windows xp it always uses smooth font. (used compatibility mode to test that theory). So it would need some code editing for which I don't have enough knowledges.

^ Nor do you have the source code that you can manipulate and recompile.