when you want to move something with AS you can increment an mc and use onEnterFrame.
(EX: this._x += 5
but how do I get the mc not to overshoot the final destination if the number it's being incremented by is big (say 30). In other words how do I get it to slow down at the end and stop right on the place I want?
Are you referring to the tween class? If not, I have no idea what you're talking about. Perhaps you could elaborate.
In this case I'll have 4 buttons spread across the screen and I want an mc (underneath the buttons) to move to each button's "x value" when the buttons are hovered over.