AS3 and pathfinding

Hey guys
With the recent developments of as3 with molehill and unity-portabilities i figured it was about time for me to make a proper game.

Hence i found it needed to learn/manage to achieve some pathfinding in a gameproject that i’ll be doing.

Is there any resources for mesh-pathfinding in AS3?
What are your thoughts on grid-based pathfinding? from what i have seen, it doesn’t give me what i’m trying to achieve.

Look at this from a point of view where im trying to create a game similar to Warcraft 3.

Thanks alot