Private Sub Worksheet_Change(ByVal Target As Excel.Range)
If Target.Column = 1 Then
Application.EnableEvents = False
With Target
.TextToColumns Destination:=.Cells(1, 1), DataType:=xlDelimited, _
TextQualifier:=xlDoubleQuote, ConsecutiveDelimiter:=False, Tab:=False, _
Semicolon:=False, Comma:=True, Space:=False, Other:=False
End With
End If
Application.EnableEvents = True
End Sub