hi, I have a problem, I can´t load a image from database (Access)

my code,
'''''''''''
        Dim cnn As New OdbcConnection
        cnn.ConnectionString = "DSN=Imag"

        Dim sSql As String

        sSql = "SELECT Imagem,Imagem1 FROM Imagens"

        Dim cmd As New OdbcCommand(sSQL, cnn)

        cnn.Open()

        Dim dr As OdbcDataReader
        'cn.Open()
        dr = cmd.ExecuteReader(CommandBehavior.CloseConnection)
        If dr.Read Then
            Dim bytBLOBData(dr.GetBytes(1, 0, Nothing, 0, Integer.MaxValue) - 1) As Byte
            dr.GetBytes(1, 0, bytBLOBData, 0, bytBLOBData.Length)
            Dim stmBLOBData As New MemoryStream(bytBLOBData)
            PictureBox1.Image = Image.FromStream(stmBLOBData)
        End If
        dr.Close()
''''''
Erro Messeger : Invalid Parameter

Image Type : CorelDraw.Graphic.7 ou Bits Map


any help??

Thanks Pedro