How to update installed application

See more:

C#

Visual-Studio

setup

deployment

I need to create a MSI package for a client, where with each release they can just download the latest version of the application.

I am not entirely sure how this works.

Is there a tutorial that will show how to accomplish this?

I want the user to just be able to check for updates, and if there is, install the latest updates to the app, without having to uninstall and install again, and without having to setup each config file for each instance of the app running all over again.

I will be using Setup and Deployment project in Visual Studio 2010. If there are better alternatives, please list them.

Thanks