Interesting little pet project: Installing ChromiumOS on an old Netbook
I repurposed an old netbook that I wasn’t using anymore today – a Toshiba NB100 to run the nightly vanilla builds of ChromiumOS by Hexxeh (http://chromeos.hexxeh.net/vanilla.php)
It worked right out of the box – except for the sound. An interesting, little animal, indeed!
Sascha Corti aka. TechPreacher 
Hi, I just have a question… How did you do it???? before throwing away my toshiba nb100, I want to try Chrome OS on it.
You need a bootable memory stick containing Chromium. Check out this link: http://lifehacker.com/5820358/how-to-turn-your-netbook-into-a-chromebook-with-chromium-os