how recive a DataSet from a webmethod function??

hello guys.....im trying to recive a dataset form a webservice method...so i can show the results in a windows form...here is the code.

Code:

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<WebMethod()> _
    Public Function BuscarProducto(ByVal codigo As Integer) As DataSet
     
        Dim Conn As String = "Data Source=.\SQLEXPRESS;AttachDbFilename='C:\Users\Master\Documents\Visual Studio 2005\Projects\Prueba 2\DB_prueba3.mdf';Integrated Security=True;User Instance=True"

        Dim Adapt As SqlDataAdapter
        Dim DS As New DataSet
        Dim strSelect As String
        strSelect = "Select nom_pro, precio_pro FROM Productos WHERE Productos.id_pro = '" & codigo & "'"
        Adapt = New SqlDataAdapter(strSelect, Conn)
        Adapt.Fill(DS, "Productos")
        Return DS

    End Function

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and here is the windows form button search by codigo

Code:

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Dim DS As DataSet = MiServ.BuscarProducto(TextBox1.Text)
        With DS.Tables("Productos")

            TextBox2.Text = .Rows(0).Item(1)
            TextBox3.Text = .Rows(0).Item(2)

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im a new on this.......THX