Building a Cool House for Hot Times without Scorching the Pocketbook is #1 on this Barnes & Noble list: Barnes & Noble.com Books - Architecture, Domestic->Amateurs' manuals
Excerpt from review (Reviewer's Choice):
A chronological compendium of events and practical advice from planning, to "punch list", Building A Cool House For Hot Times Without Scorching The Pocketbook will prove an invaluable read for anyone contemplating building (or remodeling) their own home.
Update 1-23-08: Now it's down to #4. Drat.