Streamin on Xbox360

How do i stream a film thats on my laptop, onto my xbox360?
Answer #1
Make sure windows media player 11 is installed on your laptop.
then in wmp go to media sharing and exept your xbox360 as a user.
know you can go to your xbox360 and watch a movie
Answer #2
Done.
Had to download a media update on my Xbox360.
Thanks.