Hi,
I'm guessing that this applies to a column of cells so select that column
range then
Format|Conditional format
Select formula is
enter this formula
=AND(A1<>"",A1>TODAY()-30)
pick a colour
Note that the A1 should be the address of the topmost cell of your range
which in your case may not be A1
Mike
> I know the date that a vehicle needs to go in for it's yearly maintenance and
> i want to see if i can cause the cell that the date is in to change color a
> month prior to the date....does anyone know if that can be done and how to do
> that?