how do i do advanced grammar check in word 2007
I don't know what you mean by "advanced". There is only the single grammar
checker that comes with the program. If you go to Office button > Word Options >
Proofing and click the Settings button in the spelling and grammar section of
the options dialog, you can change a number of settings.
In any case, beware of any computerized grammar checker. Word's checker is
better than in previous versions, but it's still no substitute for a decent
education, constant proofreading, and careful attention to what you're writing.
It _will_ get things wrong, both missing existing errors and complaining about
nonexistent errors.