to know the emigration clearance in hong kong

hai.i m imad from iraq.now i m doing business in u a e...i have business tour next feb 06 to 8 in macau. i booked hotel in macau. and i took ticket to hong kong..do i need transit visa to reach hong kong,.after from hong kong i l go to macau by air.do i need hong kong transit visa.kindly help me as soon as possible