Help a beginner?

i noticed that ALL TIME FLASH sites have good transitions from page to page… when you click a button in the movie, it takes you to another screen… is each screen a separate project?

also… i noticed that when you turn an object into a button and double click… you are taken to button options (up, down, hit…) but how do you change all that to standard timeline… i noticed that some samples on the kirupa site have objects as buttons, but when you double click you are not taken to UP DOWN HIT, but a timeline that is like the normal one you start with