In this order I've DMed them; 1978 AD&D, 1989 AD&D 2nd Edition, 1996 Basic D&D (RC), 2000 3E, 2003 3.5E, 2003 HackMaster, 2004 Castles & Crusades, 2008 4E. (okay, 3E, HackMaster, and C&C don't count for the question, but they are D&D!). I currently DM an ongoing long term AD&D 2nd Edition game with critical hit and fumble tables from Crusader Magazine, Piety from Dragon Magazine, Comeliness from 1st Edition UA, and "luck points" from Fudge. I'm a big fan of Core Rules 2.0 Expantion. I can't tell you how that's helped to speed up the game. But for 1st Edition you can't beat the DM's Assistant for DOS from SSI, from way back in the day. I still use that program A LOT when I run 1st Edition. It's an invaluable tool!
http://free-game-downloads.mosw.com/abandonware/pc/utilities/dungeon_master_s_assistant_volume_i.htmlhttp://free-game-downloads.mosw.com/abandonware/pc/utilities/dungeon_master_s_assistant_volume_ii.htmlPeace,
Rod
