WiX (Windows Installer XML toolkit) is a powerful tool from Microsoft to generate MSI files. Building installers is a pretty horrible process, WiX takes much of the pain out of the process. You can download form the official site.

A gentle introduction to WiX

I discuss the basics of how to use WiX to build installers.

Using WiX to install SQL databases and execute SQL scripts

Frequently installers are required to install and set up databases.

Using WiX to set and edit registry values

Configuring the registry is easy to do with WiX

Installing Services

Installing and configuring Windows Services with WiX


Using WiX to edit XML files during installation.

Using msiexec to manipulate msi files

Not directly a WiX topic, but anyone using WiX needs to understand the msiexec tool.