Try this:

=SUMPRODUCT((C2:C1000=DATE(2006,1,1))*(C2:C1000<= DATE(2006,3,31))*AL2:AL1000)

--
HTH,

RD

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"Jeremy Ellison" wrote in message
...
I want to add a column of numbers (column AL, which contains #.# Grams) if
column C (dates) is between a range of dates (ie. between 1/1/06 and
3/31/06).

I could use sumproduct if it was text, to count the number of occurrances
of
a certain text, but how to I get it to add numbers....?