Code
using (System.Messaging.MessageQueue mq = new System.Messaging.MessageQueue(".\\private$\\mq3"))
            {
                System.Messaging.Message msg = new System.Messaging.Message();
                msg.BodyStream = new FileStream("e:\\CodeSmithProfessional-40.msi", FileMode.Open);
                mq.Send(msg);
            }

private  void SendFile(string fileName, string queuePath)
        {
            int i;
            int count = 0;
            int msgNumber = 0;
            int chunkSize = 4194000;
            //Open an existing queue
            MessageQueue queue = new MessageQueue(queuePath);
            System.Messaging.Message msg = new System.Messaging.Message();
            MessageQueueTransaction t = new MessageQueueTransaction();
            t.Begin();
            try
            {
                //Open the file for reading
                using (FileStream fs = File.OpenRead(fileName))
                {
                    // while there are bytes
                    while ((i = fs.ReadByte()) != -1)
                    {
                        // if count has reached size, send message
                        if (count >= chunkSize)
                        {
                            msgNumber++;
                            msg.AppSpecific = msgNumber;
                            //Send the messsage
                            queue.Send(msg,t);
                            string nextMsgId = msg.Id;
                            count = 0;
                            //Create a new message
                            msg = new System.Messaging.Message();
                            msg.CorrelationId = nextMsgId;
                        }
                        msg.BodyStream.WriteByte((byte)i);
                        count++;            // from the original file
                    }
                    msgNumber++;
                    msg.AppSpecific = msgNumber;
                    //Send the last message
                    queue.Send(msg,  t);
                    t.Commit();
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
            finally
            {
                //release queue resources
                queue.Close();
            }
        }

private void ReceiveFile(string fileName, string queuePath)
        {
            byte[] data;
            int length;

            //Open an existing queue
            MessageQueue queue = new MessageQueue(queuePath);
            try
            {
                //Open file for writing
                using (FileStream fs = File.OpenWrite(fileName))
                {
                    //Receive the first message
                    System.Messaging.Message msg = queue.Receive(new TimeSpan(0, 0, 0, 1));
                    while (msg != null)
                    {
                        //Get the Lenght of the message body stream
                        length = Convert.ToInt32(msg.BodyStream.Length);
                        //Create a buffer to hold the stream in memory
                        data = new byte[length];
                        //Read the body stream
                        msg.BodyStream.Read(data, 0, length);
                        //Write the buffer into the file
                        fs.Write(data, 0, length);
                        //Receive following message
                        msg = queue.Receive(new TimeSpan(0, 0, 0, 1));
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
            finally
            {
                //release queue resources
                queue.Close();
            }
        }

Code
string queueFormatName = "";// args[0];
            string fileName = "";// args[1];
            queueFormatName = @"DIRECT=OS:ibm-t60\private$\myq";
            fileName = "e:\\OpenbravoERP-2.35-windows-installer.exe";
            LargeMessage message = 
                new LargeMessage(new FileStream(fileName, FileMode.Open, FileAccess.Read));

            
            LargeMessageQueue queue = 
                new LargeMessageQueue(queueFormatName);

            queue.Open();
            try 
            {
                queue.Send(message);
            } 
            finally 
            {
                queue.Close();
            }