AArrrgghhh, sorry about that - www.thenaturalhome.com NOT 'house' He calls them Zero Energy High Thermal Mass Homes, so googling that will also get you there, but the link should work now.
Speedfunk- Thanks for the link - I will definitely be following your progress - I'm sure I will have a few questions also, but for now I want to ask you if you are familiar with the HTM concept - again found at; The Natural Home web-site? It is a very similar concept to yours ie: dry-stacked blocks, earth-bearmed, passive-solar design. With a few added features that you may want to consider, ie: round-wood roof system, interior planterbeds, and earth-tubes.