Aligning baselines of column DIVs

Need to align the bottoms of (floated) DIVs that form two columns.
Date Created: 15th October 2006
Date Modified: 15th October 2006
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Query in WebmasterWorld CSS Forum:

Div 2
Div 3
Div 4
There is a dash in the name of this ID - ok in IE? Background should be blue, with a red border.