WPF with autoupdate (like demos click once)

[Dominios Molinos]

Hello,
I would like to implement in my WPF application autoupdate functionality, like WPF online demos. Is it using click once??
My application will be separated in modules, and I want to each module check for newest version, download and install it automatically.
The application is goning to run in our intranet, not internet like demos.
I was seeing demos source but it's a bit complicated, I would like to see a simplest example, some links with more information!

Thanks in advance!
Alejandro