Many of you already know about this, but here is a great calculator that breaks down the tax credit through the end of 2009.
http://www.firstpacificfunding.com/savingscalculator.php
If you want more information about it, give Steve Carnes a call at First Pacific, he is a master with all of that stuff. 866-484-5575
If you call him make sure you mention that you are a Nachi member, as there are discounts in place.
JJ