4 links
Dungeon Keeper Millennium
dk.despayre.org
Contains strategy guides and tile, monster, magic, and item summaries.
Phil's Dungeon Keeper Guide
icequake.net
General hints and tips. Guide to doors, traps, rooms, creatures, spells and a level guide.
The Adrenaline Vault
avault.com
Reviewed by Shawn Quigley, [5/5]. "This very well could be one of the games of the year."