Sub ScratchMacro()
'A basic Word macro coded by Greg Maxey
Dim lngStart As Long
Dim lngIndex As Long
Dim lngCount As Long
Dim arrList() As String
Dim oTbl As Table
Dim oRow As Row, oNewRow As Row
  lngStart = 1
  Set oTbl = ActiveDocument.Tables(1)
  Do
    On Error GoTo lbl_Exit
    Set oRow = oTbl.Rows(lngStart)
    lngStart = lngStart + 1
    oRow.Select
    'Your text in column 2 is a comma separtated list. You can create an array from it
    arrList = Split(Left(oRow.Range.Cells(3).Range.Text, _
                    Len(oRow.Range.Cells(3).Range.Text) - 2), ",")
    lngCount = UBound(arrList) + 1
    For lngIndex = 1 To lngCount
      lngStart = lngStart + 1
      If lngIndex <> lngCount Then
        oRow.Cells(2).Range.InsertAfter vbCr & arrList(lngIndex - 1)
        Else
          oRow.Cells(2).Range.InsertAfter vbCr & arrList(lngIndex - 1)
        End If
      If lngIndex = 1 Then
        Set oNewRow = oTbl.Rows.Add(oRow.Next)
      Else
        Set oNewRow = oTbl.Rows.Add(oNewRow.Next)
      End If
      oNewRow.Cells(2).Range.Text = arrList(lngIndex - 1)
    Next lngIndex
  Loop
lbl_Exit:
  Exit Sub
End Sub