External swf and disabled buttons

does anyone have a tutorial or FLA that involves transitioning between external SWF’s? For eaxample an intro to an MC and then the outro of that MC before the next MC’s intro plays.

I’m looking for one that specifically disables the button that has been pressed and locks in a position (color, etc) so the user know what page they are on and unlocks when the next button is pressed, plays the outro, and then the intro of the next swf and locks out that next button.

Does this makes sense> I hope so. Thanks for any leads.