This tutorial describes how to use Microsoft Visual Studio 2005 to create a VB.NET server application from scratch. This application parses an ADT^A04 (Register a Patient) message and extracts the following fields:

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

The application then displays the values of these fields.

	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 parse 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 parse a message and display the parsed output;
• Test the application you have just created.