What is "Dijkstra's Algorithm"? I was under the impression a simple A* was what most people went with.

Edit> I just checked it out on the internet. I'd go with A*, it is a little more efficient and flexible. A pain to write in c-script though (you'll have to use single dimension arrays to store all that data). Perhaps you could do that side of it in the SDK and include it as a plugin with the tutorial? Dijkstra's Algorithm doesn't appear to be much less data intensive.