Ok if I understand you correctly, a npc is killed...creating a corpse...and once you examine the corpse/click on it..the journal entry pops.
Check this thread..scan down about half way where stoffe jumps in...she knows her s^$#...I think you can do it that way and instead where they are putting create object, you would put the addjournalentry script functions to produce your journal entry.
http://www.lucasforums.com/showthread.php?t=168222&highlight=bodybag)
Hope this is what you're looking for, good luck