It would have been helpful if you had said at the outset what the requirements are. You can still use the same basic approach, though - just skip step 3 and, instead, run the following macro:
Code:
Sub Number()
Dim i As Long
With ActiveDocument.Tables(1)
For i = 1 To .Rows.Count
.Columns(2).Cells(i).Range.Text = i
Next
End With
End Sub
For installation & usage instructions, see:
http://www.gmayor.com/installing_macro.htm