How to make a flash website that all the things are put at the middle of the windown?

every time when i make a flash website all my things are at the left hand side of the window, i want to make a flash website in the middle of the windown, and that will looks like this kind of format [example : http://www.clubsaffire.com/ , [url=“http://www.361studios.com/”]http://www.361studios.com/ , [url=“http://www.advanceflash.com/#sec=0”]http://www.advanceflash.com/#sec=0 etc.]

Can anyone tell me plz…
Thank you!!!

Ryan