求一个完整的VB程序.要求如下

用VB编写的程序：要求，一个名为form的窗体上画两个命令按钮，编写适当的事件过程，运行后，一个按钮显示，另一个按钮隐藏；点击显示的按钮，此按钮隐藏，另一个显示，同样点击这个显示的按钮，这个按钮隐藏，另一个显示！

要完整的代码，谢谢！

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放三个按钮，第三个记大点。
VB code:

Private Sub Command1_Click()
Command1.Visible = False: Command2.Visible = True: Command3.Caption = "第一个按钮隐藏了，第二个显示了"
End Sub

Private Sub Command2_Click()
Command1.Visible = True: Command2.Visible = False: Command3.Caption = "第二个按钮隐藏了，第一个显示了"
End Sub

Private Sub Command3_Click()
Command1.Visible = True: Command2.Visible = True: Command3.Caption = "两个按钮都显示了"
End Sub

Private Sub Form_Load()
Command1.Caption = "我显示了": Command2.Caption = "我显示了": Command3.Caption = "两个都显示了！"
End Sub

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VB code:

Private Sub Command1_Click()
Form1.Command2.Visible = True: Form1.Command1.Visible = False
End Sub

Private Sub Command2_Click()
Form1.Command1.Visible = True: Form1.Command2.Visible = False
End Sub

Private Sub Form_Load()
Form1.Command1.Caption = "显示按钮2"
Form1.Command2.Caption = "显示按钮1&quo