I made some node-based simple AI you can have a look at.
You got me on MSN, shoot me a message, i'll sort you out smile

(I know basics on A* as well, not ever tried it though... maybe now is the time :P)

regards,

Formerly known as dennis_fantasy
Portfolio - http://www.designorhea.com/
Project - http://randomchance.cherrygames.org/