=SUM(IF($A$1:$A$100=DATE(2009,3,1),$C$1:$C$100+$E$ 1:$E$100))

Please note that this is an array formula. Within the cell in edit mode (F2)
paste this formula and press Ctrl+Shift+Enter to apply this formula. If
successful in the Formula Bar you can notice the curly braces at both ends
"{=<formula}"

--
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---------------
Jacob Skaria


"Mona" wrote:

Thanks in advance!

Data
A B C D E
1/2/2009 3 1 3 2
1/3/2009 2 5 2 6
1/4/2009 1 3 1 3

If column A=1/3/2009 then add column C + column E. Thanks a bunch