Or just look at the script for necromancy realism and you know, look at how the creator made it so you didn't have to do things that would waste a lot of time.
http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=7580 theres the link if you're too lazy to actually look up the mod >.>
That mod does not accomplish the same task being discussed here. What my aim is, or was, is to be able Soul Trap NPCs, or at least trick oneself into thinking that that's what's happened. My proposed method would basically be an illusion, a bit of smoke and mirrors. Like summoning modded creatures. That's an illusion, a trick, because a script is causing the creature to appear, not the normal summoning system, since that bit of coding is off-limits.