You sure can. Follow
http://www.eqemulator.net/wiki/wikka...egoryCreateNPC and at the bottom it shows you how to add an NPC in-game with items in primary and secondary slots.
You can also use Georges Tools
http://www.eqemulator.org/forums/showthread.php?t=32282 and add just about anything to your NPC after you have made him and used "#npcspawn create" to add it into the db.