I was able to duplicate this crash once. After I reach the next milestone in researching Civilizations, game crashes either when I click on the new research area icons (eg housing or slums) or if I click 'continue'
Here's the debug/dmp files from the first crash: http://dl.dropbox.com/u/8939242/Elemental0_806-2010-07-10T23-23-51-468.zip
After I loaded my autosave and tried to duplicate the first crash, here's the debug/dmp from second crash: http://dl.dropbox.com/u/8939242/Elemental0_806-2010-07-11T10-26-48-531.zip
Screen shot from second crash: http://dl.dropbox.com/u/8939242/elemental1.gif
And my dxdiag: http://dl.dropbox.com/u/8939242/DxDiag.txt