Hi

With XL2003 or lower, you could just use
=SUM(D10:D65536)
For XL2007 it would be
=SUM(D10:D1048576)

It might be better to create a dynamic range
InsertnameDefineName myRange Refers to =D10:INDEX(D:D,COUNTA(D:D))
The use
=SUM(myRange)

--
Regards
Roger Govier

"JRThomas" wrote in message
...
I am trying to write a formula that will sum all cells in a column no
matter
how long the worksheet becomes. I have this as the current entry:
=SUM(D10:)

What would I enter for the value after the colon?