Pop up flash site

u no how sum flash sites load up as like a pop up,

they have there page normaly sayin if the website dosnt load click here and then the flash site pops up in a box and all the. i wanna do that. help ne 1 im sure theres a tut sum where but i cant find 1

help please

i think an example wud be


oh yeah and how wud u do a preloader like that. i mean the 1 where the dude turns into the hulk as it loads.