I am using excel 2003.

I tried to get my sales per quarter in one cell, so I have two columns, one
for the date, the other one is my sales revenues.

I dont have problem with one argument, but I dont know how to integrate
the second argument.

If I applied this function in my cell: =SUMIF(C24:C300,"=39172",D24:D300)
it works for all date since 39172. But how can I integrate: and =<39172. to
get sales from my first quarter.

You understand that I worked with the numbers of day since 1900, because I
dont know, how to use date value formula.

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Any suggestions would be greatly appreciated.

Andre