That is not enough detail to get your question answered. What exactly are you trying to do? What are you getting that makes it fail? Have you compiled after making the changes?
spawn = 1619 <- thats the npc id
3422 <- thats the x co-ordinates
3567 <- thats the y co-ordinates
the first zero is the height level
any numbers after the first are about things like movement boundaries but you are prob best not to use them yet.
boodveld <- this is the description of the monster you are adding just fot you to refer back to at any point you dont have to add the name description
one you have added an npc into the autospawn.cfg save and close
compile and run your server