Hi Kelvin
no idea what you mean, could you please explain in a bit more detail i.e.
i have
........A.........B.........C.............D
1.....10....................................
2...............20..........................
3............................30.............
4...........................................40
and i want
........A.........B......C..............D..........E
1.....10............................................10
2...............20..................................20
3........................30.........................30
4..........................................40.......40
if so then in column E you could use a formula such as
=SUM(A1

1) and then fill down ...
Cheers
JulieD