Dim myRange As Range, myCell As Range
Set myRange = Selection.Cells
' For...Next loop goes through all of the cells in the range and
' tests if they are blank
' pops up a message with the cell address
For Each myCell In myRange
If myCell.Value = "" Then
MsgBox myCell.Address
End If
Next myCell
[code]Sub which_are_the_blank_cells()
End Sub[/code]