I have two columns of data column a is always the same coloum b get
filled out every week with numerical data for instance

data1 10
data2 9
data3 6
data4 4


at the end of the week i want to add the totals in column b to
another
sheet but every time add the current weeks data to that what has
already been done


i.e


running total


data1 23
data2 78
data3 56


anyone got any ideas this is stumping me

Johny