One thing is Microsoft quite quickly stop these workarounds and another that what is problem with WGA? Obviously a problem for illegal version. Besides, they will still get critical updates wont they?

http://www.mydigitallife.info/2006/04/26/disable-and-remove-windows-genuine-advantage-notifications-nag-screen/comment-page-13/ just to show how many battles there have been with WGA/MS. They are not easy to fool. Even if it works you might be surprised at next update 8) Also what works for some dont have to work for others.

I thought MS decreased number of phone-home events after they got “caught” not too long ago. Even gave legit versions option to disable? Both yes and no perhaps http://support.microsoft.com/kb/905474/en-us