Hello, I am new to VBA and feel this might be quite a simple issue - but I just don't have a clue what to do.
When I put this bit of code into my function, when I try and run it Excel (2003) gets stuck and I have to force close Excel.

  Do Until IsEmpty(ActiveCell)
    ' Check active cell for search value.
    If ActiveCell.Value = x Then
    DS = DS + ActiveCell.Offset(0, 1)
    Else
    x = ActiveCell.Value
    ActivellCell.Offset(-1, 3) = DS
    End If
    Loop
Any help would be much appreciated.