I had a great chapter on A* in a book I bought 'AI for Game Developers'.

Not wanting to step on toes, but I'll see if I can retell it in a seperate thread. It was amazingly clear to me the way he did it. It's not the only way to do A*, but it's certanly an easy way to learn it for the first time. (It used heavy illustrations aswell.)

If it is well received then I'll write up an article for PGD.

EDIT: Wow, I just looked back to the first post... this is an OLD thread. No toe stepping at this point then I guess huh?