I have several saved up hoping to try it some day.
http://www.secretsof.com/content/624
http://www.quiltingworks.com/cabin-fever/projects/quiltasyougo.htm
http://www.treadleon.net/quiltshop/joiningblocks/joining.html
http://www.acornhillquilts.com/freeprojects.htm
There might be something that could help you, I hope so.
Mary