This tutorial describes how to use Microsoft Visual Studio 2005 to create a VB.NET client application from scratch. This application generates a ADT^A04 (Register a Patient) message after obtaining the following user input:

• The patient's ID number;
• The patient's surname;
• The patient's given name;
• The patient's social security number.

	Note that this is a very simple example whose purpose is to show you how to use Chameleon in the VB.NET environment. In particular, this application does not use sockets to obtain messages from another application.

In this tutorial, you will:

• Create a simple VB.NET application to generate HL7 messages;
• Create a VMD file containing a message definition;
• Generate stubcode that enables your application to interact with Chameleon;
• Import the Chameleon libraries into your application;
• Write code to obtain user input and generate a message based on this input;
• Test the application you have just created.