Visual Basic.NET - ¿Vb2010 Como abrir un link aleatorio con un boton?

Dim lista() As String = {"http://www.google.com",

                            "http://youtube.com.pe",

                            "http://www.lawebdelprogramador.com/",

                            "https://www.dropbox.com/"}

'Creamos un random

Dim Random As New Random()

Dim valor As Integer = Random.Next(0, 4) '(minimo valor,total de items)

Dim proceso As New System.Diagnostics.Process

With proceso

    .StartInfo.FileName = lista(valor).ToString

    .Start()

End With