I've made a routine in VB to insert a image into a table. The code is:

         Set cmd = New ADODB.Command
            cmd.ActiveConnection = objconexion
            cmd.CommandText = "INSERT INTO tb_tmp_ventanas (ventana) VALUES (?)"
            archivo = "c:\image.jpg"
            fd = FreeFile
            Open archivo For Binary Access Read As fd
            flen = LOF(fd)
            Set imagen = cmd.CreateParameter("imagen", adLongVarBinary, adParamInput, flen)
            ReDim chunk(1 To flen)
            Get fd, , chunk()
            imagen.AppendChunk chunk()
            cmd.Parameters.Append imagen
            Set rsInsert = cmd.Execute
            Close
      

    But on execute there is the next error: ERROR: type "lo" does not exist;

    How can i reference the "lo" type or create it, in postgres 8.3

    Thank you very much