spawning npcs to move through door way and attack

ok i have read fifty thousand billion million tutorials today likehttp://www.modsonline.com/Tutorials-read-249.html and a whole bunch of others, none of them work for what i am trying to do and its this simple

http://img231.imageshack.us/my.php?image=diagramal9.png

spawn = npc_maker

as you can see im trying to make the npc spawn and go through the door at a triggered time but he just spawns and stands there and if i have he pre placed he will ruin everything!!! wtf!!!! i placed nodes although i dont know how to link em and stuff iny ways im tierd of reading tutorials just giv me a quick explanation please!!!!

Upon just glancing in the HL2 tutorials I found two things that might help:

http://www.snarkpit.net/editing.php?page=tutorials&game=HL2&id=144

http://www.snarkpit.net/editing.php?page=tutorials&game=HL2&id=164

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