THE BILL FOR IRAQ
* 2003 - $US48 billion
* 2004 $US59 billion
* 2005 $US81 billion
* 2006 $US94 billion (estimated)

 http://www.smh.com.au/news/world/rocketing-us-war-spending-under-fire/2006/04/20/1145344222782.html

And the new US embasy in Bagdad is estimated to be costing over one billion dollars:

The Billion-Dollar Baghdad Embassy -  http://www.uruknet.info/?p=m22708&hd=0&size=1&l=e

U.S. Building Massive Embassy in Baghdad -  http://news.yahoo.com/s/ap/20060414/ap_on_re_mi_ea/iraq_new_embassy_2