[as2] Course of the movie clip

Hi.
I want to make a movie clip travel along a line.
The dark point (inside the gray circle), must be aligned with the line.
So I want the movie clip to start at the top, aligned with the line, and to travel, along the line, to where ends the red point.
And the travel must be within 90 seconds.
I´ve tried within 10 seconds. It looks ok with that, but I need it to be within 90 seconds.
And it needs to be in as2 (action script 2.0)
The file is attached.
There´s some code in it. Maybe it helps a little :).

Thanks :)