The article with which i learned A* was this one

I also started a RTS project some time ago, but atm i'm to lazy to implement open and closed lists.

How my levels are build up:
- a wmb with terrain and modells
- texture as a mask for trees
- texture as a mask for nodes

The graph is grid based and is stored in an array ( i use no ents for this )

Perhaps we could exchange our experiences. Till new year i want to implement the pathfinding

muffel