Thank you so much everyone. For those who don't know, 'the book', or rather books as there are three now, are One Block Wonders, OBW ENcore and OBW Cubed all by Maxine Rosenthal. The cube instructions are in Encore and Cubed gives more cubey ideas. Check out Katrine's one here on the board.
http://www.quiltingboard.com/t-68715-1.htm