how to match a fingerprint from database?

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VB

i now able to save the fingerprint directly to database using this code...

Dim fingerprintData As MemoryStream = New MemoryStream
    Template.Serialize(fingerprintData)
    fingerprintData.Position = 0
    Dim br As BinaryReader = New BinaryReader(fingerprintData)
    Dim bytes() As Byte = br.ReadBytes(CType(fingerprintData.Length, Int32))
    Dim cn As SqlConnection = New SqlConnection("Data Source=.\SQLEXPRESS;Initial Catalog=dataBEST;Integrated Security=True;Pooling=False")
    Dim cmd As SqlCommand = New SqlCommand("INSERT INTO fininger_table VALUES(@FIRSTNAME, @LASTNAME, @FINGERPRINT)", cn)
    cmd.Parameters.Add("FIRSTNAME", SqlDbType.VarChar).Value = CaptureForm.tboxFname.Text
    cmd.Parameters.Add("LASTNAME", SqlDbType.VarChar).Value = CaptureForm.tboxLname.Text
    cmd.Parameters.Add("FINGERPRINT", SqlDbType.Image).Value = bytes
    cn.Open()
    cmd.ExecuteNonQuery()
    cn.Close()

now ? how to retrieve that fingerprint and matches to the user ? btw my device is DIGITAL PERSONA..tnx in advance