@alibaba: It is the new code on the wiki, I've just replaced the old zip file on my webspace with the new one. I forgot to link it here, though: http://www.superku.de/HPF.zip

@pegamode: Once you find the correct nodes the rest should not be difficult. I've posted such a vector projection some time ago on the forum or have a look at my one region function which calculates the projection onto the region bounding box.

EDIT: Btw. you can use my/ your pathfinding code for this and simply ignore the last node. When the entity reaches the second last node, calculate said projection, "abort" the regular pathfinding and move the entity to the newly calculated target.