Mac startup preloader?

I would like to make a preloader for an upcomming project. I would like to make a preloader like the startup of a Mac. I mean the little round thing that looks like it’s spinning round (with the different shades of grey).

Can somebody help me with it please? I’ve been trying for a few hours, and I don’t get anywhere. It’s been a while since I use Flash… :-/


Something similar to ?

If so, to do that I made an mc that had the / type things moving backwards, and then I set the preloader so it would make the mc move across, it was hidden by a mask.

I don’t have OSX, so I just thought this is what you meant when you described it.