You can do it in Word easily enough. Assuming IO is the content if the cell and not part of the content then the following macro will work
Code:
Sub GetIO()
Dim oRow As Row
Dim oCell As Range
For Each oRow In Selection.Tables(1).Rows
Set oCell = oRow.Cells(1).Range
oCell.End = oCell.End - 1
If oCell.Text = "IO" Then oRow.Cells(3).Range.Text = "YES"
Next oRow
End Sub
http://www.gmayor.com/installing_macro.htm