You can use a pivot table and drag the dates header to the row and the sales
to the data,
click finish, the right click in the table and select group, then clear
month and select days and then
in the number of days select 7 and click OK
Could look like something like

Sum of Sales
Dates Total
11/1/2007 - 11/7/2007 20
11/8/2007 - 11/14/2007 22
11/15/2007 - 11/21/2007 20
11/22/2007 - 11/28/2007 22
11/29/2007 - 11/30/2007 6
Grand Total 90



--


Regards,


Peo Sjoblom


"KathyP" wrote in message
...
Does anyone have an idea how I can take a group of sales numbers and
figure
out the MTD Weekly cumulative? I have a worksheet that has the sales
figures
for each day of a given month. My boss wants to figure MTD weekly
cumulative. I am clueless and you all seem soooooooooooooooo smart.
Please
help:)
--
KathyP