Copying Data from sub sheets to master sheet?

I have a desperate need...
i actually have a workbook which has 8 sheets...
sheet 1 lets call it world
the other 7 sheets let it be the 7 continents names...
now each time i enter data in suppose "asia" worksheet it should automatically get updated onto the "world" worksheet....
that is world sheet is the master sheet others are slave...each time a data is entered in the slave sheets it should be updated onto master sheet..
please help very desperate

thankin u

Hi,

In the destination cell
type =
go to the source cell
press enter


HTH
Carim