Need help converting ragdolls to npcs

ok so anyway, i downloaded this ragdoll pack of heavy combine infantry. it looks awesome, but i wanna improve it and make them into npc’s. so anyway, ive looked around at some lua files and i looked at glenneths post here http://www.facepunch.com/showthread.php?t=790366 and when i looked at his lua coding, i thought, what if i use that, and for the combine lua, i make it so that the heavys have combine behavior, meaning theyll shoot at me and others. can someone help me with this? im confused, yet im dying to make some of my ragdolls npc’s. PLOX WOULD APPRECIATE HELP. meanwhile ima go slit my wrists and choke myself till i get help >_>