Building a complex .NET application

To start the new year off with a bang as well as initiate my new blogging home with something significant I'm going to post a series of articles on building a complex .NET application from scratch. The goal is to capture a set of techniques for an end-to-end solution. There are of course many different approaches and opinions on the proper way to build an application. I will attempt to provide a pragmatic solution with some alternative techniques.
This post will serve as the main placeholder and table of contents - the links here will be updated with each post.

1. Introduction
   
2. Data Layer
   
   1. Part 1
      
   2. Part 2
      
   3. Part 3
3. Entity Layer
   
   1. Part 1
      
   2. Part 2
4. Service Layer
   
5. UI Layer
   
6. Smart Client
   
7. Web Client

Here is a list of all the products we'll be using during this "adventure":

Visual Studio 2008 Express Edition	Free .NET IDE - if you've got the disk space, install the All-in-One DVD from the download page. At a minimum, you should install the Visual C#, Visual Web Developer, and SQL Server 2008 Express editions.
AdventureWorksLT	A sample database schema based upon the Adventure Works Cycles scenario. ** NOTE: To install this you need to enable Full Text search and FileStream support when installing SQL 2008 Express.
Enterprise Library 4.1	A collection of reusable software components (application blocks)
NUnit 2.4.8	.NET unit-testing framework
NAnt 0.85	.NET build tool
FxCop 1.36	A rules-based application for analyzing .NET assemblies and reporting information.