Hi

I don't really understand your problem - but I think it may lie in the
absolute/relative reference area. Go to help and check out Absolute/Relative
references and see if that helps. By the way, your 'sum can be simplified to
just =A1+B4

Hope this helps.
AndyB

"DenDz" <DenDz@discussions.microsoft.com> wrote in message
news:4FF0C2FD-6FE8-47CD-A727-2D287CE94127@microsoft.com...
>I am attempting to create a mathamatical computation between two cells and
> then copy and paste it. Lets say I have a date (1 Jun 06) in A1 and in
> the
> "B" column, I have a minus number of days (example: -120, -90, -60, etc).
> The math computation would look like this: =SUM(A1+B4) in column "C".
> This
> would subtract the the number of days in B4 from the date of 1 Jun. If
> the
> number in B4 were -5, then the date would equate to 27 May 06 in C-4.
> That
> portion of this problem works. What doesn't work is if I copy the cell
> down
> to C-5, it always changes the date in A1 which is my constant. How do I
> stop A1 from automatically populating as A2 when I do the paste into C-5?