I wrote a functional pathfinding routine for easy implementation in my flash games. It handles horizontal, vertical, and diagonal motions just fine, but you know how A* pathfinding ends up while trying to utilize 1200 tiles in Flash MX. To move around obstacles it can take the computer 8.5 seconds to move one object from one extremity of the map to the other. And just imagine what moving 20 objects at once is like! I had another idea about moving the pathfinding commands into a VB6 program implementing the Shockwave Flash activeX component for more speed, but it still gets clunky when trying to move multiple objects.
Thanks for the idea, but I got that one covered.