Thanks everyone. It's really a fun and challenging project. As to how many layers, etc. , you embroider on the top and batting, and then you add the backing and do the quilting through all layers. I'm still learning as I go about this, but the book is very good.
If you want to see more information, I think the website is www.infinityquilt.com.au
Janome put it together as a kit with the book, the CD, and the special rulers that are really neat. It was pricey though, but I got it as a birthday present.
Shandy