Here's a couple links to DB's that have working aggro, and npc casting.
Guards were working in 041, but have since been disabled somehow, the DB's function correctly with the EXE's that are included in the posts, give them a spin.
http://forums.eqemu.net/viewtopic.php?t=6717 (links in reply)
http://forums.eqemu.net/viewtopic.php?t=7133(moving npcs)
hope this helps , enjoy
