Hello, i can't really explain how it should work but i have a video... http://www.youtube.com/watch?v=360s7FIbD3I&feature=player_embedded
RoadWalker is ported, i had it, but now it ONLY does tunneling. The new name is Tunnelr(Yes the last E is missing), and it is just as nice, just not as many choices yet.
I am working on it when possible, it is sometimes hard to interpret what people really want sometimes though http://forums.bukkit.org/threads/mech-tunnelr-ported-road-walker-v1-2-0-493.6712/#post-114298 there may be some bugs so just watch out for those