Tutorial Software

Chess Mates
[Commercial - $19] Teaches rules, elementary tactics, and provides graduated opponent to ages 9+ with animation, digitized voice.
http://www.chessmate.com/software.html

Fritz &Chesster, Learn to play chess Vol 2 Chess in the Black Castle (MAC)
[Commercial $35] 2nd in the series, teaches openings, middle game strategy and tactics, endgames, etc.
http://www.chesscentral.com/kids-chess-children/MAC-fritz-chesster2-learn-play-chess.htm

Learn to Play Chess with Fritz and Chesster (MAC)
[Commercial - $30] For Ages 8 and up.
http://www.viva-media.com/product_info.php?cPath=23&products_id=43

Maurice Ashley Teaches Chess
$9.95 - ages 10 and up - good for beginners and intermediate players.
http://www.cdaccess.com/html/pc/ashleych.htm

Think Like a King School Chess Software System
[Commercial $17-$19 per module] 7 modules: First Lessons, Tactical, Checkmate, Endgame, Opening, Tactical 2, Checkmate 2
http://www.schoolchess.com/ProductsHome2.asp