Skip the first frame! How?!

Hey dudes,

I just wanted to know how can I skip the first frame of a movie. I’m building an application with PHP/Flash…based on sessions.
For example, if the session is not registered, there is an instruction in the first frame of the flash movie that says to go to frame 2(continue the animation).
If the session is registered…i would like to go to the end…but without showing the first frame!!!

How can i do that? (gotoAndPlay(frame) does not work obviously)

Thanks in advance,

Sérgio Rui